Question

Question #3052f

Answer 1

Look at the Volume and Surface Area formulas.

Explanation:

You may do the same work beginning with V = 256.
Find r using the volume formula:
`V = (4/3)pir^3`
`256 = 4r^3`
`64 = r^3`
`4 = r`

Substitute into the Surface Area formula:
`SA = 4pir^2`
`= 12(4)^2`
= 12*16
= 192 square feet.

Answer 2

`192 ft^2`

Explanation:

Surface area of a sphere is `4 pi r^2` and
volume is `4/3 pi r^3`

Using `pi`=3 the volume would be `4r^3=256`.

This would give r=4 and thus surface area= `4pi r^2= 4(3)4^2=192ft^2`approx