plz do ques 1 and 2......help me
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hope it will be helpful
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Answer:
1)vol.of.a cylindrical roller =pie * r*r*h
4435.2=22/7*r*r*20
4435.2*7/22*20=r*r
70.56=r*r
r=8.4 cm
2)r=20cm
h=35cm
volume of cylinder =pie r*r*h
=22/7*20*20*35
=22*20*20*5
=22*400*5
=8800*5
=44000cu. cm
litre=44
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