the volume of a cular iron rod of length 1m is 3850 cm cube find it's diameter
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circular iron rod length =h =1m =100cm
let the radius = r cm
given volume =3850 cu cm
(pi*r^2*h)= 3850
(22/7 *r^2*100)= 3850
r^2=(3850*7)/(22*100)
r^2=(7/2)^2
r=7/2 cm
Therefore
diameter =d=2 r
d=2*7/2
d=7cm
let the radius = r cm
given volume =3850 cu cm
(pi*r^2*h)= 3850
(22/7 *r^2*100)= 3850
r^2=(3850*7)/(22*100)
r^2=(7/2)^2
r=7/2 cm
Therefore
diameter =d=2 r
d=2*7/2
d=7cm
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