Junaid has a rectangular box open from the top as in the figure. He paints base and 4 lateral faces as shown. He paints only up to th of the height of the box to save paint. Find the total surface area he painted.

Answers

Answer 1

The surface area is the total area occupied by the object. The surface area of the painted figure is [tex]440m^2.[/tex]

From the attached box, we have the following:

[tex]L = 20m[/tex] -- length

[tex]W = 10m[/tex] --- width

[tex]H = \frac 45 \times 5m = 4m[/tex] --- the painted height

Since the box has an open-top, the surface area is:

[tex]Area = LW + 2(WH + LH)[/tex]

So, we have:

[tex]Area = 20 \times 10 + 2 \times (10 \times 4 + 20 \times 4)[/tex]

[tex]Area = 200 + 2 \times (120)[/tex]

[tex]Area = 200 + 240[/tex]

[tex]Area = 440[/tex]

Hence, the painted area is [tex]440m^2.[/tex]

Related Questions

9/5-(-6/10= reduced to the simplest form

Answers

Answer:

Since it is a double negative, you add the two together. First, you must find the LCD though. Which is 10. So you multiply the left side by 2. This comes out to 18/10 - (-6/10) but since there's two negatives, you add them, so it's 18/10 + 6/10 = 24/10 = 12/5

Step-by-step explanation:

The answer is 12/5 (top is explaining how I got there.)

Answer:

12/5

Step-by-step explanation:

9/5 - (-6/10)

Subtracting a negative is like adding

9/5 + 6/10

Simplify 6/10 by dividing the top and bottom by 2

9/5 + 3/5

12/5

Which expression is equivalent to -9a – 10 – 6a + 7?

Answers

Answer: a = - 1/5 or a = -0.2

Step-by-step explanation:

-9a – 10 – 6a + 7 = 0

>> -9a-6a = 10-7

>> -15a = 3

>> -15a/ - 15 =3 / - 15 ( divide by -15 both side)

>> a = - 1/5 or -0.2

Find H.C.F of 75100,125900& 270

Answers

Answer:

Step-by-step explanation:

Only the third number is divisible by 3. So the HCF is 2 * 5 = 10

That's the most that is common between all three numbers.

The first two only have a HCF of 100. Nothing else goes into both of them.

What things do you need to remember to estimate large numbers

Answers

Answer:

remember to round numbers to 1 significant figure

Step-by-step explanation:

usually in an exam when you're asked to estimate the answer to a calculation, usually you round each number to 1 sf and then work on from there.

Need help ASAP thank you

Answers

Step-by-step explanation:

RF (green) = 34/(12+14+34) = 34/60 = 0.57

Last week, a chocolate shop sold 3 ounces of white chocolate. It sold 2 9/10 times as much milk chocolate as white chocolate. How many ounces of milk chocolate did the shop sell?

Answers

Answer:

8.7 ounces

Step-by-step explanation:

3*(29/10)=8.7

Is 2π a rational or an irrational number

Answers

Answer:

it is irrational number

25 points for this, anyone mind helping?

Answers

Answer:

Step-by-step explanation:

hope it help u

is a rectangle. EA is 12 in. Find the length of the diagonal .
12 in.
24 in.
6 in.
26 in.

Answers

Answer:

hey please saw the figure

Answer:

Step-by-step explanation:

its 24

Evaluate the expression 2(x – 3) + 3y when x = 5 and y = 3.

Answers

Answer:

Step-by-step explanation:

2(x – 3) + 3y

Let x=5 and y = 3

2(5 – 3) + 3*3

Parentheses first

2(2) +3*3

Multiply

4+9

Add

2(5-3)+3(3)
4+9=13 is the answer

Use the expression
4
3
+
8
−
9
y
4
3
+8−
y
9

4, cubed, plus, 8, minus, start fraction, 9, divided by, y, end fraction to find a sum

Answers

Answer:

I don't know to be honest

( x+y)² + 2(x+y)×(x-y)+(x-y)²

Answers

Step-by-step explanation:

4x is the real answer of that question

Solve for x. x – 23.3 = 17.8

Answers

Answer:

[tex]x - 23.3 = 17.8 \\ x = 17.8 + 23.3 \\ x = 41.1 \\ thank \: you[/tex]

Answer:

41.1

Step-by-step explanation:

One angle of a right triangle measures 7º. What is the measure of the other acute angle?

Answers

Let other be x

Using angle sum property

[tex]\\ \rm\Rrightarrow x+7+90=180[/tex]

[tex]\\ \rm\Rrightarrow x+97=180[/tex]

[tex]\\ \rm\Rrightarrow x=180-97[/tex]

[tex]\\ \rm\Rrightarrow x=83°[/tex]

7% of 321 . answer i beg you

Answers

Answer:

22.47

Step-by-step explanation:

321 x 0.07 = 22.47

7% of 321 is 22.47

Will mark branliest please help geometry

Answers

Answer:

C . 13

Step-by-step explanation:

9x - 16 = 7x + 10 (KL AND LM ARE SAME)

Transpose

9x - 7x = 10 +16

2x = 26

x = 26 ÷ 2

x = 13

Plz help me this is due ASAP ! Help mee

Answers

Answer:

f(x) = √x

Step-by-step explanation:

#14 please geometry hw

Answers

Answer:

7/18

Step-by-step explanation:

Area of ABED = 49

Side lengths are 7, its a square

Since AD = 7, and AG = 9, DG = 2

DE = 7 and 2 x 7 = 14

14 is the area of the small blue region.

AC = 10, and AB = 7, so BC = 3

CF = BE = 7

3 x 7 = 21

21 is the area of the big blue region.

21 + 14 = 35

Area of the whole shape is 9 * 10 = 90

35/90 = 7/18

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

What is 30-[9+4(8-5)]

Answers

Answer:

Step-by-step explanation:

30 - (9+4 x 3)

30 - (9 + 12)

30 - 21

= 9

A circle is divided into two sectors in the ratio 3:7. If the radius of the circle is 7cm, calculate the length of the minor arc of the circle

Answers

Answer:

13.2cm

Step-by-step explanation:

SEE THE IMAGE FOR SOLUTION

HOPE IT HELPS

HAVE A GREAT DAY

Answer: 13.2 cm

Explanation:

2 x pi x r = P

P = 2 x 22/7 x 7
P = 44cm

Length of minor arc = P x 3/10 = 44 x 3/10 = 13.2 cm

A circle is cut from a square piece of cloth, as shown: A square, one side labeled as 34 inches, has a circle inside it. The circle touches all the sides of the square. The portion of the square outside the circle is shaded. How many square inches of cloth are cut from the square? (π = 3.14)

Answers

Answer: 907.9 in^2

Step-by-step explanation:

The square has sides of 34 inches each. A circle drawn in the center and touching the edges would have a diamenter of 34 inches, and thus a radius of (34/2) = 17 inches. The area of a circle is pi*r^2. Area = 3.14*(17)^2.

Area of the circle = 907.9 in^2 That is the material cut from the square.

i dont know how to solve this

Answers

Answer:

x° = 43°x° = 51°x° = 86°

Step-by-step explanation:

Given,

x + ( x + 8) + 2x = 180° [Since angle sum property of triangle]

=> x + x + 8 + 2x = 180

=> 4x + 8 = 180

=> 4x = 180 - 8

=> 4x = 172

[tex] = > x = \frac{172}{4} [/tex]

=> x = 43

As,

We got value of x as 43 so,

x° = 43°

x° = 43 + 8 = 51°

x° = 2 × 43 = 86°

Answer:

180

Step-by-step explanation:

What is the point-slope form of the equation for the line with a slope of −2 that passes through the point (4,−6)?

Answers

Answer:

y- - 6 = -2(x-4)

y+6 = -2(x-4)

Step-by-step explanation:

It was recommended that students drink 48 or more ounces of water.
How could you use a histogram to easily display the number of students
who drank the recommended amount?

Answers

Histograms are used to graph the frequency of data, where the length of the bar represents the frequency.

The number of students that drank the recommended amount of water are 125

Given that

[tex]Recommended = 40\ or\ more[/tex]

The number of students who drank the recommended amount are students whose frequency (i.e. length of bars) is 40 or more

From the histogram (see attachment), only 2 bars are above the frequency of 40.

And the number of students in these bars are: 50 and 75

[tex]Total =50 + 75[/tex]

[tex]Total =125[/tex]

Hence, the number of students that drank the recommended amount of water are 125

Answers

Answer:

1st

Step-by-step explanation:

..............

) A club on campus is selling Entertainment coupon books for $30 each. It costs the team $10 to
buy each book. The club has 500 books. The team's profit P(n) is given by the following
function where n represents the number of books sold.
p(n) = 30n - 5000
a. What does the 30n represent?
b. What does the 5000 represent?
c. How much profit would they make if they sold 400 books?

Answers

Answer: hola

Step-by-step explanationno

Number x is 10% more than number y. Number y is 10% more than number z. How much percent is number z less than number x?
pls step by step

Answers

Answer:

i hope it helped U

stay safe stay happy

halp please???????????

Answers

Step-by-step explanation:

[tex]thank \: you[/tex]

add 4 beginning at 7

Answers

The answer is 11. 7+4=11

divide (x^2-3x-5)/(x-4)

Answers

Answer:

[89]<100/:

Step-by-step explanation:

[tex]( {x}^{2} - 3x - 5) \div (x - 4)[/tex]

write in fraction

[tex] \frac{ {x }^{2} - 3x - 5}{x - 4} [/tex]

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