The lateral surface area of a hollow cylinder is 1320 cm².The radius of it‘s base is 7cm. Find the height and volume of the cylinder. *
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Answer:
CSA of cylinder = 1320 cm²
Step-by-step explanation:
step 1. CSA of cylinder = 2πrh
1320 = 2 × 22/7 × 7 × h
1320/2 = 22 × h ( because 7 and 7 has been simplified )
660 = 22 × h
660/22 = h
30 cm = h
Volume of cylinder = πr²h
= 22/7 × 7×7 × 30 ( 7 and 7 will be simplified and one 7 will remain)
= 22× 7 ×30
= 4620 cm³
Therefore the height of cylinder is 30 cm
and volume of cylinder is 4620 cm³
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