In Fig. 12.30 ,OACB is a quadrant of a circle with centre O and radius 3.5 cm. If OD = 2 cm, find the area of the (i) quadrant OACB, (ii) shaded region.

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

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

Given a circle with centre O and radius 2.5 cm, what is the length of the longest chord of the circle?

Find the area of a quadrant of a circle whose circumference is 22 cm.

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.

In Fig. 12.31, a square OABC is inscribed in a quadrant OPBQ. If OA = 20cm, find the area of the shaded region.(Use pi=3.14 )

In fig., a square OABC is inscribed in a quadrant OPBQ. If OA = 20 cm, find the area of the shaded region.

In the fig. fourth quadrant of a circle is OACB where O is the centre of the circle and radius of the circle is 3.5 cm. Find the area of fourth quadrant of the circle.and find the area of shaded portion of the part ADBC if OD=2cm (pi=22/7)