Question

find the tsa of cylinder whose volume is 448cm2. height is 7cm.and radius is 8 cm

Answer 1

Tsa of cylinder =2×pi×r (h+r)
2×22/7×8(7+8)
44/7×8×15
=753.6
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Answer 2

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

$\green{\therefore{\text{T.S.A\:of\:cylinder=753.6\:cm}^{2}}}$

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

$\green{ \underline \bold{Given : }} \\ : \implies \text{Radius(r) = 8\: cm} \\ \\ : \implies \text{Height(h) =7 \: cm} \\ \\ \red{ \underline \bold{To \: Find : }} \\:\implies \text{T.S.A\: of \: cylinder = ? }$

• According to given question :

$\bold{As \: we \: know \: that} \\ : \implies \text{T.S.A\: of \: cylinder} =2\pi r(h + r) \\ \\ : \implies \text{T.S.A\: of \: cylinder} =2 \times \frac{22}{7} \times 8(7 +8) \\ \\ : \implies \text{T.S.A\: of \: cylinder} =2 \times 3.14\times 120 \\ \\ \green{ : \implies \text{T.S.A\: of \: cylinder} = 753.6\: {cm}^{2}}\\\\ \purple{\text{Some\:formula\:related\:to\:this\:topic}}\\ \pink{\circ\:\text{Volume\:of\:cylinder}=\pi r^{2}h}\\\\ \pink{\circ\:\text{C.S.A\:of\:cylinder}=2\pi rh}$