Question

Find the weight of a solid cone whose base is of diameter 14 cm and vertical height 51 cm,supposing the material of which it is made weighs 10 grams per cubic cm.

Answer 1

Diameter of the base of solid cone=14 cm

and vertical height (h)=51 cm

$\therefore Radius\left(r\right)=\frac{14}{2}=7cmVolume=\frac{1}{3}\pi r^{2}h=\frac{1}{3}\times \frac{22}{7}\times 7\times 7\times 51c{m}^2=2618c{m}^{3}Weightof1c{m}^3=10gramsThentotalweight=2618\times 10gm=\frac{26180}{1000}kg=26.18kg$