Question

Find the total surface area of cylinder whose radius is 3.5cm, height is 10cm

Answer 1

Answer:

I think your answer will be 220 Sq cm

Step-by-step explanation:

Volume of a cylinder is 2py (r+h)

Therefore 2* 22/7* (3.5* 10)

When we solve this equation

We get the answer as 220 Sq cm

Answer 2

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

$\green{\therefore{\text{T.S.A\:of\:cylinder=297\:cm}^{2}}}$

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

$\green{ \underline \bold{Given : }} \\ : \implies \text{Radius(r) = 3.5\: cm} \\ \\ : \implies \text{Height(h) = 10\: cm} \\ \\ \red{ \underline \bold{To \: Find : }} \\ : \implies \text{T.S.A\: of \: cylinder = ? }$

• According to given question :

$\bold{As \: we \: know \: that} \\ : \implies \text{T.S.A\: of \: cylinder} =2\pi r(h + r) \\ \\ : \implies \text{T.S.A\: of \: cylinder} =2 \times \frac{22}{7} \times 3.5(10+ 3.5) \\ \\ : \implies \text{T.S.A\: of \: cylinder} =2 \times 22 \times 6.75 \\ \\ \green{ : \implies \text{T.S.A\: of \: cylinder}=297 \: {cm}^{2} }$

$\blue{\text{Some \: related \: formula \: to \: this \: topic}} \\ \pink{\circ \: \text{C.S.A \: of \: cylinder = }2\pi rh} \\ \\ \pink{\circ \: \text{Volume \: of \: cylinder = }\pi {r}^{2} h}$