Mathematics
Related Questions
A semi-circular lamina of radius 35 cm is folded so that the two bounding radii are joined together to form a cone. Find :
(i) the radius of the cone.
(ii) the (lateral) surface area of the cone.
Find the surface area and volume of a sphere of diameter 21 cm.
A shot-put is a metallic sphere of radius 4.9 cm. If the density of the metal is 7.8 g per cm3, find the mass of the shot-put.