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