Question

Find the side of the cube whose surface area is 216 sq. in

Answer 1

Answer:

Let the side of a cube be a cm

As we know that

total surface area of a cube with side a is 6a

2

Given total surface area of a cube is 216 cm

2

⟹6a

2

=216

⟹a

2

=36

⟹a=6

So side of a cube is 6 cm

Answer 2

$\sf \Large Solution!!$

$\sf \large Given:$

$\sf \to$ Surface area of cube = 216 sq unit

$\sf \to$ Surface area of cube = 6 × (Side)²

$\sf \to$ 216 = 6 × (Side)²

$\sf \to$ 216 ÷ 6 = (Side)²

$\sf \to$ 36 = (Side)²

$\sf \to$ Side = $\sf \sqrt{36}$

$\sf \to$ Side = 6 units