The perimeter of a sector of angle 90° of a circle with radius 14 cm is ...............

Area of the ring of external radius R and internal radius r is .................

Angle described by the minute hand in one minute is ..................

Area of sector with angle q° and radius r is ...............

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

The diameter of a wheel is 1.26 m. What the distance covered in 500 revolutions?

Find the area of circle that can be inscribed in a square of side 10 cm.

What is the diameter of a circle whose area is equal to the sum of the areas of two circles of radii 40 cm and 9 cm ?

A steel wire when bent in the form of a square encloses an area of 121 cm². If the same wire is bent in the form of a circle, then find the circumference of the circle.

If the circumference of a circle increases from 4\(\pi\) to 8\(\pi\), then what about its area?

Area of a circle is the portion enclosed under perimeter.

If circumferences of two circles are equal, then their areas must be equal.

If circumference of a circle and perimeter of square are equal than area of circle is equal to area of sqaure.

The circumference of a circle exceeds its diameter by 180 m, then radius is 42 m.

A circular region is divided into equal sectors by 6 diameters. The angle of each sector is 60^o .

A horse is tied to a peg at one corner of a square shaped grass field of side 15 m by means of a 5 m long rope (see figure).  Find

(i) the area of the part of the field in which the horse can graze.
(ii) the increase in the grazing area if the rope were 10 m long instead of 5 m.  \((take, \pi\ =3.14)\)

The cost of planting grass in a circular park at the rate of \(Rs.\ 4.90/m^2\) is \(Rs.\ 24,640\) path at the rate of \(Rs.\ 3696\).Find the cost of fencing the path on both sides at the rate of \(Rs.\ 2.10/m\).

The given figure depicts a racing track whose left and right ends are semicircular.  The distance between the two inner parallel line segments is 60 m and they are each 106 m long.  If the track is 10 m wide, find:
(i) the distance around the track along its inner edge.
(ii) the area of the track.

In figure APB and CQD are semicircles of diameter 7 cm each, while ARC and BSD are semicircles of diameter 14 cm each.  Find the perimeter of the shaded region. \([Use\ \pi={22\over 7}]\)

On a square cardboard sheet of area \(784\ cm^2\), four congruent circular plates of maximum size are placed such that each circular plate touches the other two plates and each side of the square sheet is tangent to two circular plates.  Find the area of the square sheet not covered by the circular plates.

Find the area of the flower-bed having semicircular ends as shown in the figure. \([Use \ \ \pi = \frac{22}{7}]\)

In the given figure, arcs are drawn by taking vertices A. B and C of an equilateral triangle of side 10 cm, to intersect the sides BC, CA and AB at their respective mid-points D, E and F. Find the area of the shaded region.

In fig., PSR, RTQ and PAQ are three semicircles of diameters 10 cm, 3 cm and 7 cm respectively. Find the perimeter of the shaded region. [ Use \(\pi\) = 3.14]

Calculate the area of the shaded region in the figure common between two quadrants of circle of radius 8cm each.

In the adjoining figure, B and CD  are two diameters of a circle (with centre O) perpendicular to each other and OD is the diameter of the smaller circle.If OA=7cm, find the area of shaded region.

In fig., ABCDEF is any regular hexagon with different vertices A, B, C, D, E and F as the centres of circles with same radius 'r' are drawn. Find the area of the shaded portion.

A farmer has field of length 20 m and breadth 14 m. By the farmer a well of diameter 7 mis dug 10 m deep for villagers. The earth taken out is spread in the field. Find the level rise in the field. Write the value depicted.