Question

the volume of a right circular cylinder whose circular base area is 154 sqcm and height 10 cm is

Answer 1

Given: Volume of cylinder=?
Area of circle=154 sqcm
Height of cylinder=10 cm
But, area of circle is π×r×r
So, 154=22/7×r×r
$154 \times 7 \div 22 = 49$
${r}^{2} = 49$
$r = 7cm$
Therefore, volume of cylinder is
$\pi {r}^{2} h$
22/7×7×7×10


$1540 {cm}^{3}$
Hope it helps u

Answer 2

Given:
Volume of cylinder=x
Area of circle=154 sqcm
Height of cylinder=10 cm
But, area of circle is π(r)(r)
So, 154=22/7(r ) (r)
154 \times 7 \div 22 = 49154×7÷22=49 
{r}^{2} = 49r​2​​=49 
r = 7cmr=7cm 
Therefore, volume of cylinder is
\pi {r}^{2} hπr​2​​h 
22/7(7)(7)(10)


1540 {cm}^{3}1540cm​3​​ 
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