if the lateral surface area of the cross section are 90 cm sq and 24 cm sq,find the total surface area
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if the lateral surface area of the cross section are 90 cm sq and 24 cm sq,find the total surface area
if the lateral surface area of the cross section are 90 cm sq and 24 cm sq,find the total surface area
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Answer:
Answer
Given, h=5cm
⇒Let radius =r
(i) Curved Surface Area
⇒94.2cm
2
=2πrh
⇒94.2 cm
2
=2×3.14×r×5cm
⇒r=3cm
(ii) Volume of cylinder
⇒πr
2
h=3.14×3×3×5
=141.2cm
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