Question

find the radius of a right circular cylinder whose volume is 3080cu cm and height is 20 cm

Answer 1

☆Hello Friend☆

We know that Volume of cylinder÷
$\pi {r}^{2} h$

3080cm^3 = 22/7 × r^2 × 20cm

3080cm^3 × 7/22 × 1/ 20 cm= r^2

154 cm^2×7/22= r^2

49 cm^2= r^2

$\sqrt{49 {cm}^{2} } = radius$

7 cm = radius

Hope it helps

Have a ^ Good Day^ Ahead☺

Answer 2

volume=3080cm^3
height=20cm
22/7*r*r*20=3080
440r^2=21560
r^2=49
r=7cm