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2015-03-10T20:02:59+05:30

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Volume of cone = 1/3 πr²h
also base area , πr²=38.5 
volume = 77 
77=1/3*38.5*h
h=77*3/38.5
h=6 cm
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2015-03-10T20:07:14+05:30

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Πr² = 38.5cm
vol of the cone = 1/3 × πr²h
77 = 1/3 × 38.5 × h
77/38.5 = 1/3h
2= 1/3h
h=2*3
h= 6cm
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