Question

Find the side of a cube whose surface area is 864cmsq.​

Answer 1

Answer:

12cm

Step-by-step explanation:

surface area of a cube,

A=6a2= 864

a² = 144

a=12

therefore the side of the cube is is 12 CM

Answer 2

Side of the square is 12 cm

Step-by-step explanation:

We Have :-

Cube with TSA = 864 cm²

To Find :-

Side of the cube

Formula Used :-

TSA of Cube = 6 × side²

Solution :-

$tsa \: of \: cube = 6 \times {side}^{2} \\ \\ 864 = 6 \times {side}^{2} \\ \\ {side}^{2} = \dfrac{864}{6} \\ \\ {side}^{2} = 144 \\ \\ side = \sqrt{144} \\ \\ side = 12 \: cm$

Side of the square is 12 cm