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

ABCP is one-fourth of the circle whose radiusis 14 cm. Taking AC is diameter a semi circle is drawn. Find the area of shaded portion.

From each corner of a square ofside 4 cm a quadrant of a circle of radius 1 cm is cut and also a circle of diameter 2 cm is cut asshown in fig. Find the area of the remaining portion of the square.

Find the area of a circle of radius 30 cm (use pi = 3.14)

A square of side 3 cm is inscribed in a circle. Find the area of the shaded portion.

ABCD is a square of side 4 cm. With every comer as the centre, quadrant of a circle is drawn and at the centre a circle of 1 cm radius is drawn as shown in figure. Find the area of shaded portion.

In figure, OACB is a quadrant of a circle 3.5 cm. OD = 2 cm, find the area of quadrant OACB,

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

Two concentric circles have radii 20 cm and 15 cm. Find the area of ring shaped region