Question

A box has a square base with side x cm , height 4 cm and volume 289 cm^3. Find x

Answer 1

8.5 cm

Explanation:

volume = height × area of base

since this a square, area of base = x²

so 289 = 4 × x²

x² = 289 ÷ 4

x² = 72.25

so x = √72.25

x = 8.5cm

hope this helps