The diagram consists of a large circle and four small circles. Each of the smaller circles has radius 1 and touches the large circle and the two small circles next on either side of it
To 3 significant figures, find the value of the shaded area in square units!

Aroulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, and 18 are black. the ball is equally likely to land in any slot. the roulette wheel is going to be spun twice, and the outcomes of the two spins are independent.the probability that it lands one time on red and another time on black in any order is(a) 0.5 (b) 0.25 (c) 0.4488 (d) 0.2244