Question

Rahul donate some part of his income to an orphanage every month . In a particular , wishesto donate toys for the children. Each toy is in the form of a cone mounted on a cyclinder of common base radius 7cm . The total height of the toy is 25cm and height of the conical part is 3 cm .find the volume of each toy .also, find the cost of material used in making one toy at ₹15per cm2

Answer 1

-αѕнυ нєяє
ƒσℓℓσω мє мαтє

Radius of cone=7cm 
Height of cone=3cm 
Radius of cylinder=7cm 
Height of cylinder= 25-3=22cm 
Volume of the toy= Volume of cone+ Volume of cylinder 
1/3?r^2H+?r^2h 
?r^2(1/3H+h) 
22/7*7*7 (1/3*3+22) 
22*7(1+22) 
22*7*23 
3542 cubic cm 
Now cost of each toy = Rs.15*3542 = Rs.53130 
Values: Kind-hearted, caring, helpful,compassionate