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Concentric circles of radii 1,2,3,. . . ...

Concentric circles of radii `1,2,3,. . . . ,100 c m` are drawn. The interior of the smallest circle is colored red and the angular regions are colored alternately green and red, so that no two adjacent regions are of the same color. Then, the total area of the green regions in sq. cm is equal to `1000pi` b. `5050pi` c. `4950pi` d. `5151pi`

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Concentric circles of radii 1,2,3,...,100cm are drawn.The interior of the smallest circle is colored red and the angular regions are colored alternately green and red,so that no two adjacent regions are of the same color. Then,the total area of the green regions in sq. cm is equal to 1000 pi b.5050 pi c.4950 pi d.5151 pi

Concentric circle of radii 1,2,3,......,100cms are drawn.The interior of smallest circle is colored red and the angular regions are colored alternately green and red,so that no two adjacent regions are of same color.The total area of green regions in sq.cm.is equals to :

In Figure,there are shown sectors of two concentric circles of radii 7cm and 3.5cm. Find the area of the shaded region.(Use pi(22)/(7))

Two concentric circles with radii p cm and (p+ 2) cm are drawn on a paper. The difference between their areas is 44 sq. cm What is the value of p? (Take pi=(22)/(7) )

In the figure, O is the centre of the circle. m(arc PQR) =60^@ OP = 10 cm. Find the area of the shaded region. (pi=3.14,sqrt3=1.73)

In the given figure, an equilateral triangle has been inscribed in a circle of radius 4 cm. Find the area of the shaded region. [Take pi=3.14 and sqrt(3)=1.73 ]

In the given figure, a circle is inscribed in an equilateral triangle ABC of side 12 cm. Find the radius of inscribed circle and the area of the shaded region. [Use sqrt(3)=1.73 and pi=3.14 ]

In the given figure ABCD is a square of side 4cm. A quadrant of a circle of radius 1 cm is drawn at each vertex of the square and a circle of diameter 2 cm is also drawn. Find the area of the shaded region. [Use pi=3.14 ]

PQRS is a diameter of a circle of radius 6cm. The lengths PQ,QR and RS are equal. Semicircles are drawn with PQ and QS is diameters, as shown in the given figure. If PS=12cm, find the perimeter and area of the shaded region. [Take pi=3.14 ]

A circle is inscribed in a square of side 14m. The ratio of the area of the circle and that of the square is pi:3 (b) pi:4 pi:2 (d) pi:1

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