From a circular piece of cardboard of radius 3 cm two sectors of `90^@` have been cut off. Find the perimeter of the remaining portion nearest hundredth centimeters (Take `pi = 22/7`).

From a circular piece of cardboard of radius 3cm two sectors of 90^(@) have been cut off.Find the perimeter of the remaining portion nearest hundredth centimeters (Take pi=(22)/(7))

From a circular piece of cardboard of radius 3 cm, two sectors of 40^@ each have been cut off. The area of the remaining portion is

A square sheet of maximum area is cut out from a circular piece of carboard of radius 21 cm. Find the area of the remaining card board.

On a square handkerchief, nine circular designs each of radius 7 cm are made. Find the area of the remaining portion of the handdkerchief

From a ribbon of length 15m, two pieces of 7m and 6.5m were cut. Find the length of remaining piece.

From a square of side 8 cm, two quadrants of a circle of radii 1.4 cm are cut from two corners. Another circle of radius 4.2 cm is also cut from the centre as shown in the figure. Find the area of the remaining (shaded) portion of the square. [Take pi =22/7 ]

The perimeter of the sector of circle of radius 10.5 cm is (Take pi = (22)/(7) )

On a square handkerchief,nine circular designs each of radius 7cm are made (see Fig.12.29 ).Find the area of the remaining portion of the handkerchief.

From a square of side 8 cm, two quadrants of a circle of radii 1.4 cm are cut from two corners . Another circle of radius 4.2 cm is also cut from the centre as shown in the figure . Find the area of the remaining (shaded) portion of the square . ["Take"pi=(22)/(7)]