Question

Use the formula SA=6s2 , where SA is the surface area and s is the edge length of the cube, to solve this problem.

Eliz must cover a cube-shaped box with giftwrap. The edge length of the box is 312 feet.

What is the surface area of the box?



Enter your answer, as a mixed number in simplest form, in the box.

Answer 1

Using the SA formula you'll have to substitute in the edge length for s.

SA = 6(312)²
SA = 584064

The surface area is 584,064 feet²

Hope this helps :)

Answer 2

The Surface area of box is
`73(1)/(2)` feet²

Explanation:

Given : Eliz want to cover a cube-shaped box with gift wrap. The edge length of the box is
`3(1)/(2)` feet.

We have to find the surface area of the box.

Given formula to be used

Surface area of cube = 6s²

Where s is the edge length of the cube.

Since, given edge of the box is
`3(1)/(2)` feet.

`3(1)/(2)` feet simplifies to
`(7)/(2)` feet.

Put in above formula, we get,

Surface area of cube =
`6((7)/(2) )^2=6* (49)/(4)=3* (49)/(2)`

Which simplifies to
`3* (49)/(2)=(147)/(2)=73(1)/(2)`

Thus, The surface area of box is
`73(1)/(2)` feet²