Question

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

Answer 1

Answer:

r= 7cm

Step-by-step explanation:

height of the cylinder =h= 20 cm

given volume of the cylinder = 3080 cu cm

πr²h = 3080

22/7×r²×20 = 3080

r²= (3080×7)/(22×20)

r²= (140×7)/20

r²=7*7

∴ r= 7cm

Answer 2

Answer:

Volume of right circular cylinder = π*r^2*h

  3080 cm =π*r^2*20

3080/20 = 22/7*r^2

154 = 22/7*r^2

154*7/22 = r^2

7*7 = r^2

r = √49

r = 7 cm

Therefore radius is 7 cm

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