Mensuration Practice Test 2

Curved surface area of cone
πrl = p × 70 × 80
= 5,600 $\mathit{\pi }{\mathit{m}}^2$
Curved surface area of cylinder

2πrh = 2 × p × 70 × 3 = 420 ${\mathit{\pi }}^2$
Total surface area of (cone + cylinder)
(56,000π + 420π)
= 6,020π
= 6020 × $\frac{22}{7}$ = $18920{\mathit{m}}^2$
Width of the canvas = 2 m.
Area = 18,920
l = ?
l × b = 18,920
l = $\frac{18920}{2}$ = 9460 m