Question

A cube has side length fifteen kilometers. What is its surface area

Answer 1

Surface area is just the sum of the area of all of the sides of a shape.

A cube has 6 equal sides. Each side is a square.

The area of a square is a*a.

So the surface area of a cube is 6 * (a*a).

Answer 2

And your answer will be in squared units(squared km in this case)

Answer 3

What do you think it is??

Answer 4

what do I do for a*a

Answer 5

multiply!

Answer 6

so I multiply 6*6 omg im so lost!

Answer 7

Where are you lost at??

Answer 8

@obey_deedee you want help or not??

Answer 9

Anyways....here.....A cube has 6 sides. The surface area of one side would be 15*15 since all the side lengths are the same on a cube. 15*15 = 225 times the 6 sides = 1,350 km²

Answer 10

thanks so much so basically I just multiply area by area and what they gave me ..

Answer 11

yes..no problem! anytime!:)