In fig., sectors of two concentric circles of radii 7 cm and 3.5 cm are given. Find the area of shaded region. `("Use " pi = (22)/(7))`

In the fig, PSR, RTQ and PAQ are three semi circles of diameters 10 cm, 3 cm and 7 cm respectively. Find the perimeter of shaded region. ("Use " pi = (22)/(7)) .

in fig. find the area of the shaded region [ use pi = 3.14 ]

Two concentric circles of radii 3.5 cm and 7cm form a sector as shown in the figure. Find the area of the shaded region.

Two circles of radii 3 cm and 4.5 cm are drawn with their centres 5 cm apart. They are:

The areas of two concentric circles are 962.5cm^2 and 1386 cm^2 respectively. What is the width of the ring?

Find the area of the shaded region in fig if radii of the two concentric circles with centre O are 7 cm and 14 cm respectively and lfloorAOC=40^(@) OR Find the area of the shaded region in fig. if ABCD is a square of side 14 cm and APD and BPC are semi circles.

In the given figure, O is the centre of circle such that diameter AB = 13 cm and AC 12 cm. BC is joined. Find the area of the shaded region. ( pi = 314 )

The circumference of a circle exceeds the diameter by 16.8 cm. Find the radius of the circle. ("Use " pi = (22)/(7))

Two circular pieces of equal radii and maximum areas, touching each other are cut out from a rectangular cardboard of dimensions 14 cm xx 7 cm . Find the area of the remaining carboard. ("Use " pi = (22)/(7))

Two circles of radii 4 cm and 2 cm have their centres 7 cm apart. These circles.