Question

The lateral area of a cube is two hundred fifty-six square kilometers. What is its side length?

Answer 1

Help

Answer 2

let the length side of a square is x.
the lateral area of a square = 4 * side * side

known the lateral area of a square = 256
so, 4x^2 = 256
solve for x

Answer 3

how

Answer 4

4x^2 = 256
first, divide by 4 on both sides, what do you get ?

Answer 5

64

Answer 6

that shoul like this :
4x^2 = 256
4x^2 : 4 = 256 : 4
x^2 = 64

Answer 7

now, take the suare root "right side" to get x

Answer 8

* square root