Question

How many square feet of paper do you need to cover a cube with a side 10 in. long? Round your answer to two decimal places.

A. 4.17 sq ft
B. 86.40 sq ft
C. 6.94 sq ft
D. 82.52 sq ft

Answer 1

`10 in = 0.83 ft= (5)/(6) ft\\ A=6* ((5)/(6)) ^(2)=4.17`

So the answer is A. 4.17 sq ft.

Answer 2

Answer: A. 4.17 sq ft

Explanation:

The total surface area of cube is given by :_

`T.A.=6(side)^2`

Given: The side of cube = 10 in.

We know that 1 feet = 12 inch

∴
`1\ in.=(1)/(12)\ ft`

Therefore, the side of cube =
`10*(1)/(12)\ ft=(10)/(12)\ ft`

Then the total surface area of cube is given by :_

`T.A.=6((10)/(12))^2\\\\=6((100)/(144))\\\\=4.16666666667\approx4.17\ sq\ ft`