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3 years ago

A cube has a side length of 13 millimeters.What is the surface area of the cube?

1 answer:

wel3 years ago

8 0

Surface area of a cube is n^2, n being the measurment of any one side of the cube. In this case, 13x13=169, so the answer is 169 mL^2.

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5 men take 45hours to build a wall.how long will it take 9men working at the same wall?

Karolina [17]

Answer:

25 hours

Step-by-step explanation:

It takes 5 men 45 hours to build a wall.

So, if no. of men increases by 1.8 [∴ 5 x 1.8 = 9],

then time taken reduces by that same amount.

=> 45 hours / 1.8

=> 45 / (9/5)

=> 45 x 5 / 9

=> 5 x 5

=> 25 hours

7 0

2 years ago

Cylinder B is proportional to Cylinder A.

Anarel [89]

Answer:

scale factor=3/2

Step-by-step explanation:

scale factor=6/4=3/2

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3 years ago

Find the product. (n + 7)2

nlexa [21]

(x-7)^2 = (x-7)(x-7) = x^2 -7x -7x +49 = x^2-14x+49
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4 0

3 years ago

Please Help please and thank you!

tatuchka [14]

Answer:

Step-by-step explanation:

cube means 3D square.. right?

so for volume we want the height x width x length.. make sense?

since each edge is 9'

the volume is $9^{3}$ = 729 $ft^{3}$

7 0

3 years ago

Read 2 more answers

PLESE HELP GEOMETERY

nalin [4]

In this problem, you must use SohCahToa which basically means:

Sin - opposite over hypotenuse

Cosine - adjacent over hypotenuse

Tangent - Opposite over hypotenuse

So in this picture we have 4 -which is on the opposite side of x - and a 5 -which is the hypotenuse of the triangle. This means we must use sin.

Using a calculator you put in:

$sin^{-1} (\frac{4}{5} )$

Your answer is 53.13 degrees

4 0

3 years ago