Question

u 04 CM
XIII. If the radius and height of a solid cylinder are r сm and hcm respectively, then find
the volume of the cylinder.​

Answer 1

Let the height and radius of solid cylinder be h and r cm respectively. Given that, radius (r) = 5 cm and total surface area = 660 cm2cm2=> 2πrh+2πr2=6602πrh+2πr2=660=> 2πr(h+r)=6602πr(h+r)=660=> (h+5)=3305π=3305×722(h+5)=3305π=3305×722=> h=66×722−5=21−5h=66×722−5=21−5 Therefore, Required height = 16 cm

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