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प्रश्न
Find the volume of the cylinder if the circumference of the cylinder is 132 cm and height is 25 cm.
उत्तर
Given: Circumference of the base of cylinder = 132 cm and height h = 25 cm
Circumference of base of cylinder = 2πr
⇒ 132 = 2πr
⇒ 132 = `2 xx 22/7` r
⇒ r = `(132 xx 7)/(2 xx 22)`
⇒ r = `924/44`
⇒ r = 21 cm
Height = 25 cm
Volume = πr2h
= `22/7 xx 21 xx 21 xx 25`
= 22 × 3 × 21 × 25
= 34650 cm3
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