Question

the total surface area of cone is 17.28 find volume if diameter is 5.6


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Answer 1

Answer:

TSA of cone = πrl

17.28 = 22/7 * 2.8 *l

height=15.39

volume of cone = 1/3 π*r2*h

=1/3 *22/7 * 2.8 *2.8 *15.39

=1/3*22/7 *120.65

= 1.04*120.65

= 125.47 cm2

Answer 2

given that...,

total surface area of cone = πrl

17.28 = 22/7 * 2.8 *l

height=15.39

volume of cone = 1/3 π*r2*h

=1/3 *22/7 * 2.8 *2.8 *15.39

=1/3*22/7 *120.65

= 1.04*120.65

= 125.47 cm^2

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