Question

A cylindrical container of radius 6cm and height 15cm is filled with chocolate. The chocolate is to be filled into cones of height 12cm and radius 3cm having a hemispherical shape on the top. Find the number of cones that can be filled with the chocolate?

• A. 10
• B. 15
• C. 20
• D. 25

Answer 1

The correct option is A

10

Volume of the cylinder = $\pi r^{2}h=\frac{22}{7}\times (6{)}^2\times 15=1695.6c{m}^3$

Volume of the cone = $\frac{1}{3}\pi r^{\prime 2}h=\frac{1}{3}\pi \times (3{)}^2\times 12=113.04c{m}^3$

Volume of a hemisphere = $\frac{2}{3}\pi r^{\prime \prime 3}=\frac{2}{3}\pi (3{)}^3=56.52c{m}^3$

Volume of new shape = volume of cone + volume of hemisphere = 169.56$c{m}^3$

Let the number of cones that can be filled be x = $\frac{\text{volume of the cylinder}}{\text{Total volume of the solid(cone+ hemisphere)}}$

x = $\frac{1695.6}{169.56}$ = x = 10

10 cones can be filled.