Question

the curved surface area of a cylinder is 1320sq . cm and its base has diameter 21 cm . find the height of the cylinder​

Answer 1

Answer:

Answer is 20cm                     The height of the Cylinder is 20cm

Step-by-step explanation:

Diameter= 21 cm

Radius= 21/2

CSA of Cylinder=2πrh    (where "r" is the radius and "h" is the height)

CSA of Cylinder= 2* 22/7* 21/2* h

1320=44/7*21/2*h

1320= 22*3*h                  (Divide 21 by 7 and 44 by 2, and you will get 3 and 22)

1320=66*h

1320/66=h

660/33=h

20=h