Question

find the volume oof cylinder whose height is 20cm and radius is 28 cm​

Answer 1

Volume of a cylinder = πr²h

= 22/7×28×28×20

= 49280cm³

Answer 2

$\blue{\bold{\underline{\underline{Answer:}}}}$

$\green{\therefore{\text{Volume\:of\:cylinder=49280\:cm}^{3}}}$

$\orange{\bold{\underline{\underline{Step-by-step\:explanation:}}}}$

$\green{ \underline \bold{Given : }} \\ : \implies \text{Radius(r) = 28\: cm} \\ \\ : \implies \text{Height(h) = 20\: cm} \\ \\ \red{ \underline \bold{To \: Find : }} \\ : \implies \text{Volume \: of \: cylinder = ? }$

• According to given question :

$\bold{As \: we \: know \: that} \\:\implies\text{Volume\: of \: cylinder}=\pi{r}^{2}h \\ \\ : \implies \text{Volume\: of \: cylinder} = \frac{ 22}{7} \times {28}^{2}\times 20\\ \\ : \implies \text{Volume\: of \: cylinder} =22 \times 112\times 20 \\ \\ \green{ : \implies \text{Volume\: of \: cylinder} =49280\: {cm}^{3}}\\\\ \purple{\text{Some\:formula\:related\:to\:this\:topic}}\\ \pink{\circ\:\text{C.S.A\:of\:cylinder}=2\pi rh}\\\\ \pink{\circ\: \text{T.S.A\:of\:cylinder}=2\pi r(h+r)}$