Question

THE HEIGHT OF THE CYLINDER IS 15 CM AND ITS CSA IS 660cm^2.Find it's radius
2261091869 MY FF UID​

Answer 1

Answer:

7cm

Step-by-step explanation:

$csa = 660 {cm}^{2} \\ h = 15cm$

Now, CSA would be

$2\pi \: rh = 660 \\ 2 \times 3.14 \times r \times 15 = 660 \\ 3.14 \times r = \frac{660}{30} \\ 3.14 \times r = 22 \\ r = \frac{22}{3.14} = 7$