Question

The volume of a right circular cylinder whose circular base area is 154sq.cm and height 10cm find

Answer 1

So cylinder has radius r and height h
base area is
 $\pi r^{2} = 154 \\ r = \sqrt{ \frac{154}{\pi} } = \sqrt{ \frac{154*7}{22} } = 7$
Height h = 10 cm
Volume of cylinder is
$\pi r^{2} h = \frac{22}{7}*49*10 = 1540$