If the curved surface area of a cylinder is 396 cm² and its height is 7 cm , then find its diameter of its base
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Step-by-step explanation:
CSA of cylinder is = 396 cm sq
Height of cylinder = 7 cm
Formula of CSA of a Cylinder
2πrh
2πrh = 396 cm sq
=) 2× 22/7 × r × 7 = 396 cm sq
=) 2× 22 × r = 396 cm sq
=) r = 396/ 2× 22
=) r = 18/ 2
=) r = 9
Hence the radius is 9 cm
Now Diameter is = 2×radius
= 2× 9
= 18 cm
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