Acube has a surface area of 100 square inches. which choice is closest to the length of an edge of the cube?

Simple.....

you have: Surface Area of a cube is 100 

We know that the formula for Surface Area is SA=6

1.)

SA=6

SA=17.34

2.)

SA=6

SA=65.34

3.)

SA=6

SA=100.86 (Answer)

4.)

SA=6

SA=600

Thus, your answer.

Surface area is the area of a face and add all faces areas up cubes have square faces
since it is a cube the areas of the face are the same and there are 6 faces so 100/6= 16.67
the area of a square is l times w and l and w are same since it is a square do the square root of 16.67 and the only answer that has the square root of 16 is 4.1

The volume is 56.8 triangular the