Question

find the area of base and radius of a cylinder if it's curved surface area is 660 sqcm and height is 21 cm​

Answer 1

Answer:

1/3*height

=1/3*21

=7

7/660

0.0106060606060606

Step-by-step explanation:

Answer 2

Answer:

radius=5cm

Area=78.6 cm^2

Step-by-step explanation:

CSA= 2 pi r h

660 =2 ×22/7 × r × 21

660 =2×22×3×r

660/132=r

5=r

Area= pi r^2

Area= 22/7 ×5×5

Area=550/7

Area=78.57

Area=78.6 (after rounding off)