;elp
@Michele_Laino. Please explain
@DanJS. P)ease explain. Both parts please
To find the probability of hitting the black circle, you have to compare the area of the circle to the area of the white region
They give you the diameter is 2, so the radius is 1, and the area of a circle is pi*r^2 = pi* 1 = pi
The area of the white region , is the area of the square take away the area of the circle 100 - pi
Ok can u explain both answers please
you get that part
The probability of hitting the black circle is the ratio of the two areas... \[\frac{ Area~circle }{ Area~white } = \frac{ \pi }{ 100-\pi } \approx 0.032\]
only about 3.2% chance
0 is no chance, and 1 is garunteed 100% , so it is very much closer to zero than 1
So thats the answer for part A
yea
part b is less work, since you know the chance of hitting the circle is 0.032, then the chance of hitting the white area is 1 - (chance of circle) = 1 - 0.032 = much closer to 1 for the white region
Because it is assumed he hits the board somewhere every throw , i guess, no missing
so (chance circle) + (Chance white) = 1
Can you explain Part A again please
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