Three semicircles each of diameter 3 cm, a circle of diameter 4·5 cm and a semicircle of radius 4·5 cm are drawn in the given figure. Find the area of the shaded region.

Three semicircles each of diameter 3 cm, a circle of diameter 4.5 cm and a semicircle of radius 4.5 cm are drawn in the adjoining figure. Find the area of the shaded region.

Find the area of a circle of diameter 7 cm.

In Fig. 12.33, ABC is a quadrant of a circle of radius 14 cm and a semicircle is drawn with BC as diameter. Find the area of the shaded region.

In Fig. 12.33, ABC is a quadrant of a circle of radius 14 cm and a semicircle is drawn with BC as diameter. Find the area of the shaded region.

In Figure, A B C is an equilateral triangle inscribed in a circle of radius 4 cm with centre O . Find the area of the shaded region.

PQRS is a diameter of a circle of radius 6 cm. The length PQ, QR and RS are equal Semicircle are drawn on PQ and QS as diameters. Find the area of the shaded region. Find also the length of boundaries of shaded portion.

In Figure - 5, ABCD is a square with side 7 cm A circle is drawn circumscribing the square. Find the area of the shaded region.

In Figure "ABCD" is a square with side 7 cm. A circle is drawn circumscribing the square . Find the area of the shaded region .

If Figure, there are three semicircles, A, B and C having diameter 3cm each, and another semicircle E having a circle D with diameter 4.5cm are shown. Calculate: the area of the shaded region. the cost of painting the shaded region at the rate of 25 paise per c m^2 , to the nearest rupee.

ABCP is a quadrant of a circle of radius 14 cm. with AC as diameter, a semicircle is drawn. Find the area of the shaded portion