1.

Find the volume of the following cone:(i) base radius-, 3-5 cm. height-0 cm.(ii) base radius 10 dm. height -21 dm.

Answer»

volume of a cone=1/3pie*r*r*h(i) r=3.5 cm and h=9 cmso volume=1/3*22/7*7/2*7/2*9=11*7/(3*2)=77/6cm^3(ii) r=10 dm and h=21 dmso volume=1/3*22/7*10*10*21=22*10*10=2200dm^3



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