Question

.
The height of a right circular cylinder with curved surface area 792sq.cm is 21cm. Find the radius of
the base.
Find the height of the cone.​

Answer 1

Answer:

218680sq.cm is the answer

Answer 2

Answer:

11cm is your correct answer.

Step-by-step explanation:

Let the radius of the base =r cm

Therefore, the lateral surface area of cylinder=2πrh

792=2× 22/7 ×r×21

r= 729×7/2×22×21

r=5.522 cm

Diameter of the base =2r

=2×5.522

≈11 cm

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