Question

the height of a cylinder is 21 cm and the radius of its base is 5 cm then its curved surface area is​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

Curved surface area=660cmsquare

Step-by-step explanation:

solution,

given,

height of cylinder(h)= 21cm

radius(r)= 5cm

curved surface area= ?

now,

Curved surface area of cylinder= 2×22/7×r×h

CSA = 2×22/7×5×21

CSA = 2×22×15

CSA = 660