a tank is in the form of right circular cyliender .Its height is 48cm and area base is 616 sq m .Find L.S.A and area of cylinder
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base area of cylinder=pi.r^2
616 cm^2=22/7 x r^2
r^2=616 x 7/22=28 x 7
r=14cm
lateral surface area=2.pi.r.h
=2 x 22/7 x 14 x 48
=88 x 48 cm^2
now
total surface area of cylinder=2.pi.r.h+pi.r^2+pi.r^2=2pi.r (h+r)
=2 x 22/7 x 14 x 62 cm^2
616 cm^2=22/7 x r^2
r^2=616 x 7/22=28 x 7
r=14cm
lateral surface area=2.pi.r.h
=2 x 22/7 x 14 x 48
=88 x 48 cm^2
now
total surface area of cylinder=2.pi.r.h+pi.r^2+pi.r^2=2pi.r (h+r)
=2 x 22/7 x 14 x 62 cm^2
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