Question

What is the radius of the base of a right circular cylinder whose height is 2.8cm and the curved surface
area is 121cm²​

Answer 1

6.87 ,I think (approx.)

Step-by-step explanation:

let , (r) be the radius of right circular cylinder

c.s.a of right circular cylinder =

$2\pi \: rh \: = 2\pi \: r(2.8) \\ 121 = 2( \frac{22}{7} )r(2.8) \\ \frac{121 \times 7}{2 \times 22 \times 2.8} = r \\ 6.875 = r$

approx. 6.87

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Answer 2

Answer:

6.875 is radius

I hope it will be helpful for you