Question

if lateral surface area of a cylinder is 94.2cm square and its height is 5cm then find i .radius of its base ii.its volume (use pie = 3.4)
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step by step
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Answer 1

Answer:

Given,

h = 5cm

⇒Let radius = r

(i) Curved Surface Area

⇒94.2cm² = 2πrh

⇒94.2 cm² = 2 × 3.14 × r × 5cm

⇒r=3cm

(ii) Volume of cylinder

⇒πr²h = 3.14 × 3 × 3 × 5 = 141.2cm³