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.​

Answer 1

Answer:

Height=20cm

radius=7cm

Volume=πr²h

=22/7×7×7×20

Volume=3080cm³

Total surface area=2πr(r+h)

=2×22/7×7(7+20)

=2×22×27

Total surface area=1188cm²

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