Surface Areas a...

The volume of the frustum of a cone is 313 cm$$^3$$. The bottom and top radius are 0.2 cm and 0.1 cm. Find its height. (Use $$\pi$$ = 3.14). Round off your answer to nearest whole number. 

The volume of the frustum of a cone is 690.21 m$$^3$$. The bottom and top diameters are 12 m and 8 m. Find its height. (Use $$\pi$$ = 3). Round off your answer to nearest whole number. 

Calculate the volume of a frustum cone given below: (Use $$\pi$$
= 3.14) 

The volume of the frustum of a cone is 4,200 mm$$^3$$. The bottom and top radius are R = 20 mm and r = 10 mm. Find its height. (Use $$\pi$$ = 3). Round off your answer to nearest whole number. 

Find the curved surface area of frustum cone radii 2.5 and 1.2 cm and a slant height 12.5 cm.

Calculate the volume of a frustum cone given below: (Use = 3.14) 

Find the curved surface area of frustum cone radii $$12$$ and $$6$$ cm and a slant height $$20$$ cm.

The height of the frustum cone is $$18$$ in. The area of the top and bottom circle of the cone is $$4$$ in$$^2$$ and $$16$$ in$$^2$$ respectively. Find its volume. 

The height of the frustum cone is 12 ft. The area of the top and bottom circle of the cone is 4 ft$$^2$$ and 4 ft$$^2$$ respectively. Find its volume. 

The volume of the frustum of a cone is 1,200 mm$$^3$$. The bottom and top radius are D = 5 mm and d = 1 mm. Find its height. (Use $$\pi$$ = 3).