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

From a circular sheet of radius 4cm, a circle of radius 3cm is removed. Find the area of the remaining sheet. (Take pi=3.14 )

From a rectangular cardboard sheet 145 cm long and 32 cm broad ,42 circular plates each of diameter 8 cm have been cut out . Find the area of the remaining portion of the sheet.

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.

If the perimeter of a semi-circular protractor is 36 cm, find its diameter. ("Use " pi = (22)/(7))

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 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) )