If the lateral surface of a cylinder is 94.2 cm² and its height is 5 cm, then find (i) radius of its base (ii) its volume. [Use π = 3.14]

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Solution

(i) Height (h) of cylinder = 5 cm

Let radius of cylinder be r.

CSA of cylinder = 94.2 cm²

2πrh = 94.2 cm²

(2 × 3.14 × r × 5) cm = 94.2 cm²

r = 3 cm

(ii) Volume of cylinder = πr²h

= (3.14 × (3)² × 5) cm³

= 141.3 cm³

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94.2 {c m}^{2}

5 c m

π = 3.14

If the lateral surface of a cylinder is 94.2 $c m^{2}$ and its height is 5 cm, find :

(i) radius of its base

(ii) volume of the cylinder [Use $π$ = 3.14]

Question 4 (ii)
If the lateral surface of a cylinder is $94.2 c m^{2}$ and its height is 5 cm, then find:

(ii) its volume. $[U s e π = 3.14]$

^{2}

π = 3.14

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