(Q1).Which barrel shown in the below figure can hold more water? Discuss with your friends.

1 cm4 cm 1 cm4 cm

Answer:

r1 =
= cm; h1 = cm

Volume of the 1st barrel = πr2h

=
× × × = cm3
r2 =
= cm

∴ h = cm

Volume of the 2nd barrel

V = πr2h =
× × × = cm3

Hence the volume of the barrel is more than the barrel.