An arc of a circle is a length 5`pic m` and the sector it bounds has an area of `20pic m^2` . Find the radius of the circle.

The area of a circle is 616 c m^2dot Find the radius of the circle.

The area of a circle is 154 c m^2dot Find the radius of the circle.

If the area of a sector of a circle bounded by an arc of length 5pi cm is equal to 20pi\ c m^2 , then the radius of the circle is (a) 12 cm (b) 16 cm (c) 8 cm (d) 10 cm

If a sector of a circle has an arc length of 2pi inches and an area of 6pi square inches, what is the length of the radius of the circle?

An arc of length 20pi cm subtends an angle of 144o at the centre of a circle. Find the radius of the circle.

Circle O (not shown) is divided into three sectores. Point P, Q and R are on the circumference of the circle. Sector POR has an area of 8pi , and sector ROQ has an area of 6pi . IF the radius of circle O is 4, what is the measure of the central angle of sector QOP, in degrees?

A sector of 56^0 cut out from a circle contains area 4. 4 c m^2dot Find the radius of the circle

A circle is drawn in a sector of a larger circle of radius r, as shown in the adjacent figure. The smaller circle is tangent to the two bounding radii and the are of the sector. The radius of the small circle is-

A circle is drawn in a sectore of a larger circle of radius r, as shown in fugure. The smaller circle is tangent to the two bounding radii and the are of the sector. The radius of the smaller circle is

An arc of length 15 cm subtends an angle of 45^@ at the center of a circle. Find in terms of pi , the radius of the circle.