Question

A group of 21 students shared the ice cream brick in lunch break to celebrate independence day. If each one takes a hemispherical scoop of ice cream of 3 cm radius find the vol. Of ice cream eaten by them.. a. If the dimension of the ice cream brick are 10cm• 10cm•12cm. How much volume of ice cream is left.

Answer 1

Total volume of brick= lbh
=10*12*10
=1200cm^3
Volume of 1 ice cream= 2/3πr^3
=2/3*3.14*3*3*3
=56.52cm^3
Volume of cream taken by 21 students. =21*56.52
=1186.92cm^3
Therefore ice cream left in brick=13.08cm^3

Answer 2

Answer:

13.08 cubic.cm.

Step-by-step explanation:

Total volume of brick= $Length \times Breadth \times Height$

                                  = $10 \times 10 \times 12$

                                  = $1200 cm^3$

Volume of 1 ice cream scoop = $\frac{2}{3} \pi r^3$

                                                 =$\frac{2}{3} \times 3.14 \times (3)^3$

                                                =$56.52 cm^3$

Volume of cream taken by 21 students. =$21\times 56.52=1186.92cm^3$

Ice cream left in brick=$1200 cm^3-1186.92cm^3=13.08cm^3$

Thus volume of ice cream is left is 13.08 cubic.cm.