11.3 Right Circular Cylinders

Given $h = 14$ cm, CSA = 88 cm².

Formula: $CSA = 2\pi rh$.

$88 = 2 \times \frac{22}{7} \times r \times 14$.

$88 = 44 \times 2 \times r$ (since 14/7 = 2).

$88 = 88r \implies r = 1$ cm.

Diameter = $2r = 2$ cm.