Question

Find the side of a cube whose
surface area is 2646 sq cm. ​

Answer 1

Answer: 21 cm

Work Shown:

SA = surface area of the cube

s = side length

`\text{SA} = 6\text{s}^2\\\\\text{s}^2 = \frac{\text{SA}}{6}\\\\\text{s} = \sqrt{\frac{\text{SA}}{6}}\\\\\text{s} = \sqrt{(2646)/(6)}\\\\\text{s} = √(441)\\\\\text{s} = 21\\\\`