Question

A soft drink can has a circular base with diameter 7 cm and height 12 cm. A powder tin has a square base with side 7 cm and height 12 cm. What is the difference in their capacities?

Answer 1

Capacity of the soft drink can =\(π\times\big(\frac72\big)^2\times12\) cm³ = \(\frac{22}{7}\times3.5\times3.5\times12\)cm³ = 462 cm³ 

Capacity of the powder tin = (7 × 7 × 12) cm³ = 588 cm³ 

∴ Powder tin has a greater capacity by (588 – 462) cm³ = 126 cm³.