At the beginning of a carrom game, the coins are arranged in the central circle of the board , as shown. What is the area (in Square inches) of the central circle not occupied by the coins. If the radius of each coin is `1/2`an inch

If the area of a sector of a circle of radius 2 cm is pi sq m, then what is the central angle of the sector ?

Shown below is a regular hexagon inscribed in a circle whose radius is 4 inches . What is the perimeter, in inches, of the hexagon?

If the area of the triangle shown above is 12 squares inches, what is the value of cosz?

What is the area (in cm^(2) ) of a sector of a circle, with central angle 75^(@) , when the diameter of the circle is 9 cm?

In the diagram above, ABCD is a square . The circles , whose centers lie on bar(BD) , are congruent to each other . The sides of the square are tangent to the outer circles at P,Q,R and S , and the circles are tangent to each other at K and L . If the radius of each circle is 1 inch. What is the area , to the nearest square inch, of the square ?

Ten one rupee coins are put on top of each other on table each coin has a mass 2g what is the magnitude of the force on the seventh coin due to all the coins at its top

The area of the equilateral triangle,in which three coins of radius 1cm are placed,as shown in the figure,is

A circle has a radius that is the same length as the sides of a square , if the square has a perimeter of 64 square inches , what is the area , in square inches , of the circle ?