Question

If r = 4 cm and h = 10 cm, then T.S.A. of a cylinder is : a) 440 cm2 b) 352 cm2 c) 400 cm2 d) 412 cm2
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Answer 1

Answer:

cm and h = 10 cm, then T.S.A. of a cylinder is : a) 440 cm2 b) 352 cm2 c) 400 cm2 d) 412 cm2

Answer 2

$\sf \: tsa = 2 \pi \: r(h + r)$

$= 2 \times \frac{22}{7} \times 4(4 + 10)$

$= \frac{176}{ \cancel7} \times \cancel{14}$

$= 176 \times 2$

$= 352$