OACB is a quadrant of a circle with centre O and radius 3.5 cm. If OD = 2 cm., find the area of the shaded region (use `pi=22/7`)

AB and CD are respectively arcs of two concentric circles of radii 21 cm and 7 cm . With centre O (See figure ). If angleAOB=30^(@) ,find the area of the shaded region . (use pi=(22)/(7) )

A B and CD are respectively arcs of two concentric circles of radii 21 CM and 7cm which center O(see figure).If /_=30^@ find the area of the shaded region. ( use pi=22/7 )

A square ODEF is inscribed in a quadrant OPEQ of a circle and OD = 14sqrt2 cm. Aarthi side that the area of the shaded region is 224^2 . Do you agree? Give reasons.

In the figure, the area of shaded region is…………….. cm^2 .

In the figure , the area of shaded region is …………. cm^(2) .

Area of circle with radius r = …….. cm^(2)

In the given figure A, B, C and D are centres of equal circles which touch externally in pairs and ABCD is a square of side 7 cm. Find the area of the shaded region.

Find the area of a quadrant of a circle whose circumference is 44 cm.

Find the area of a quadrant of a circle whose circuemference is 88 cm.

A is the centre of the circle and ABCD is a square. If BD = 4cm then find the radius of the circle