The radius and the height of right circular cone are in ratio 4:3. Of the area of base of cone is 154cm find its curved surface area
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let the r be 4x
and h be3x
ar of
base of cone=154cm2
Πr2=154
22/7*r2=154
r2=154*7/22=49
r=7
l=√r2+h2
l=
and h be3x
ar of
base of cone=154cm2
Πr2=154
22/7*r2=154
r2=154*7/22=49
r=7
l=√r2+h2
l=
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