A circular disc has a radius 10cm. Find the area of the disc in `m^2`. (Use `pi`=3.14)

Calculate the moment of inertia of uniform circular disc of mass 500 G radius 10 cm about (i) the diameter of the disc. (ii) the axis, tangent to the disc and parallel to its diameter (iii) the axis through the centre of the disc and perpendicular to its plane.

A circular template has a radius of 10 cm. The measurnment of the radius has an approximate error of 0.02 cm. Then the percentage error in calculating area of this template is

In a circle of radius 10cm , a chord subtends a right angle at the centre. Find the area of the corresponding : (use pi=3.14) i. Minor segment ii. Major segment

A Joker's cap is in the form of a right circular cone of base radius 7cm and height 27 cm. Find the area of the sheet required to make 10 such caps.

The radius of gyration of a uniform disc about a line perpendicular to the disc equals to its radius. Find the distance of the line from the centre.

The potential at the centre of a uniformly charged circular disc of radius 3 cm is 460V. What is the total charge on the disc?

A right circular cylinder has base radius 14 cm and height 21 cm. Find its area of base (or area of each end)

A uniform circular disc of mass 200 g and radius 4.0 cm is rotated about one of its diameter at an angular speed of 10 rad/s. Find the kinetic energy of the disc and its angular momentum about the axis of rotation.