A target shown in Figure, consists of three concentric circles of radii 3,7 and 9cm respectively. A dart is thrown and lands on the target. What is probability that the dart will and on the shaded region?

In figure, a dart is thrown and lands in the interior of the circle. What is the probability that the dart will land in the shaded region?

In the Figure, a square dart board is shown. The length of a side of the larger square is 1.5 times the length of a side of the smaller square. If a dart is thrown and lands on the larger square. What is the probability that it will land in the interior of the smaller square?

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

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

Find the area of the shaded region in Figure, where radii of the two concentric circles with centre O are 7 cm and 14 cm respectively and /_A O C=40^@ .

Suppose you drop a die at random on the rectangular region shown in Figure. What is the probability that it will land inside the circle with diameter 1m?

The boundary of the shaded region in the given figure consists of three semicircular areas, the smaller ones being equal. If the diameter of the larger one is 14 cm, calculate (i) the length of the boundary (ii) the area of the shaded region

In the circle shown above, O is the center and bar(AB) is a diameter . There are two semicircles with diameters bar(AO) and bar(BO) , and four smaller semicircles with congruent diameters bar(AC), bar(CO),bar(OD) and bar(DB) . A point is picked at random in the large circle . What is the probability that it lands in a shaded region ?

In the given figure, A, B, C and D are centres of four circles that have a radius of 1 unit. If a point is selected at random from interior of square ABCD, then what is the probability that it lies in the shaded region

Two aeroplanes I and II bomb a target in succession. The probabilities of I and II scoring a hit correctly are 0.3 and 0.2, respectively. The second plane will bomb only if the first misses the target. The probability that the target is hit by the second plane is (A) 0.06 (B) 0.14 (C) 7/22 (D) 0.7