In the figure APB and AQB are semi-circles and `AO=BO`. If the perimeter of the figure is `40cm`, find the area of the shaded region.

In figure the area of the shaded region is

If the circumference of a circle is 880cm.find its area.

Area of /_\ABC=70cm^2 and CD=5cm . Find the area of the shaded region.

In the given figure PQRS is a diameter of a circle 6cm . The length PQ, QR and RS are equal. Semi-circle are drawn on PQ and RS as diameter. If PS=12cm , find the area of the shaded region. (Take pi=3.14 )

A square OABC is inscribed in a quadrant OPBQ of a circle. If OA=14 cm, find the area of the shaded region.

In figure 12 PS is a diameter of a circle whose radius is 6cm . Two pint Q and R are taken on PS such that PQ= QR = RS . Two Semi-circles are drawn with PQ and QS as their respective diameters as shown in the figure. find the perimeter and the area of the shaded region shown in figure. (Take pi=3.14 )

In Fig 12,PS is a diameter of a circle whose radius is 6 cm.Two points Q and R are taken on PS such that PQ=QR=RS.Two semicircles are drawn with PQ and QS as their respective diameters as shown in the figure.Find the perimeter and the area of the shaded region shown in figure. (pi=3.14)

In the given figure ABCD is a square whose each side is 14cm . APD and BPC are semi-circles. Find the area of the shaded region.

If the perimeter of a semi circle protactor is 66 cm then find its radius.

The circumference of a circle is equal to the perimeter of a square of side 11 cm.Find the area of the circle.