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.

Answer 1

Answer:

The Surface area of box is $73\frac{1}{2}$ feet²

Step-by-step explanation:

Given : Eliz want to cover a cube-shaped box with gift wrap. The edge length of the box is $3\frac{1}{2}$ 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  $3\frac{1}{2}$ feet.

$3\frac{1}{2}$ feet simplifies to  $\frac{7}{2}$ feet.

Put in above formula, we get,

Surface area of cube =$6(\frac{7}{2} )^2=6\times \frac{49}{4}=3\times \frac{49}{2}$

Which simplifies to $3\times \frac{49}{2}=\frac{147}{2}=73\frac{1}{2}$

Thus, The surface area of box is $73\frac{1}{2}$ feet²

Answer 2

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 :)