Question

If the radius of the base of the cylinder is 2.8cm
and it height to 5.5cm, the find its
(i) curved surface area
(ii) Total surface area
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Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Step-by-step explanation

:Given :

radius of base of cylinder= 2.8cm height of cylinder = 5.5cm

To find: (i) curved surface area. (ii) Total surface area.

solution :

(i) curved surface area of cylinder =2×22/7 ×r×h

=2×22/7 ×2.8 ×5.5

=96.8cm²

(ii)total surface area of cylinder

=2×22/7×r(h+r)

=2×22/7 ×2.8 ×(5.5+ 2.8)

=271.04 cm²

Thank you.

Hope this will help you.