Question:
Mark (✓) against the correct answer:
the area of the base of a circular cylinder is 35 cm2 and its height is 8 cm. The volume of the cylinder is
(a) 140 cm3
(b) 280 cm3
(c) 420 cm3
(d) 210 cm3
Solution:
(b) $280 \mathrm{~cm}^{3}$
Area $=35 \mathrm{~cm}^{2}$
Height $=8 \mathrm{~cm}$
$\therefore$ Volume $=$ base area $\times$ height $=35 \times 8=280 \mathrm{~cm}^{3}$