Question

find the side of a cube whose surface area is 5400 square kilometre​

Answer 1

Step-by-step explanation:

Given : Surface area of cube = 5400 km²

To find : Length of side

Formula for surface area of cube = 6s²

6s² = 5400

$s^{2} = \frac{5400}{6}$

$s^{2} = 900$

$s = \sqrt{900}$

s = 30 km

Length of side of cube is 30 kilometers

Answer 2

Answer:

$30km$

Step-by-step explanation:

$TSA=6a^{2}$

$6a^{2}=5400$

$a^{2}=900$

$a=\sqrt{900}=30$

Thus the side is 30km.

Hope this helps. Good day to you.