Question

1. The height of a circular cylinder is 20 cm and
the radius of its base is 7 cm. Find :
(i) the volume
(ii) the total surface area.
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Answer 1

Answer:

1)volume of the given cylinder =722×7×7×20=3080cm3.

2)the TSA is 1188cm²

Answer 2

Answer:

Given :

Diametre = 14 cm Radius =14/2=7cm

Height (h) =20 cm

Volume = r2h=r(20)power2 X 7 =2800rcm3(cube)

T. S. A =2rr(r+ h)= 2rx7(20+7)

=14rx27

T. S. A =378r cm2

Step-by-step explanation:

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