Question

⭕⭕⭕⭕⭕⭕⭕⭕⭕⭕⭕⭕⭕⭕⭕⭕⭕⭕⭕⭕⭕⭕⭕⭕


Find the total surface area of each of the following right circular cylinders :

(a) diameter of the base = 7 cm, height = 21 cm

(b) radius of the base = 14 m, height = 6m!!
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Answer 1

Answer:

$answer \: 1$

we k.n.t total surface area of cylinder =2πr(r+h).

Given d=7cm and h=40cm .

Total surface area =2πr(r+h)

=2π3.5(3.5+40)=956.13

∴T.S.A=957 cm

$answer \: 2$

A=2πrh+2πr2

=2·π·14·6+2·π·142

≈1759.29189m²

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Answer 2

Answer:

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