Question

perimeter of the base is 85 m and height is 12m find surface area of cylinder. SAC= 2×22/7 × r (r+h).​

Answer 1

Answer:

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C.s.a of cylinder = 2*pi*r*h

T. S. A of cylinder = 2*pi*r(r+h)

r = 5cm

h = 12cm

C.s.a = 2*22/7*5*12

= 2640/7 cm^2

T.s.a = 2*22/7*5(5+12)

=3740/7 cm ^2

The c.s.a and T. S. A are 2640/7 cm^2 and 3740/7 cm ^2 respectively

Answer 2

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C.s.a of cylinder = 2*pi*r*h

T. S. A of cylinder = 2*pi*r(r+h)

r = 5cm

h = 12cm

C.s.a = 2*22/7*5*12

= 2640/7 cm^2

T.s.a = 2*22/7*5(5+12)

=3740/7 cm ^2

The c.s.a and T. S. A are 2640/7 cm^2 and 3740/7 cm ^2 respectively