Question

1.Find the side of a cube whose surface area is 5400 square.cm?

Answer 1

30 cm

Explanation:

Step 1: The surface area of a cube = 6a^2, where "a" is the side of the cube.

Step 2: We are given surface area of a cube = 5400.

Step 3: Now plug in the surface area of the cube = 5400 and simplify.

5400 = 6a^2

a^2 = 5400/6

a^2 = 900

Now take square root on both sides, we get

a = √900

a= 30 cm

Therefore, the side of the cube is 30 cm.

Thank you.