Question

Abel throws a dart that hits the square shown below:

A square is drawn. A circle of radius 4 units touches the sides of the square.

What is the probability that the dart does not hit a point in the circle?

16%
21.5%
64%
78.5%

Answer 1

@Michele_Laino @mathrulezz

Answer 2

this problem assumes that he dart has the same odds of hitting anywhere inside the square. on that basis, just divide the area of circle by area of square.

Answer 3

Oh and how do you do that? @IrishBoy123

Answer 4

πr^2/(r+r)^2

Answer 5

area of square: 8x8 = 64

Answer 6

so then 4 x 2/8 x 2?

Answer 7

8/16 or 1/2 then, right?

Answer 8

@IrishBoy123 last question..... is it A?

Answer 9

πr^2/(r+r)^2 = π/4 = 0.785, thus 78.5% of the area of square is covered by circle. BUT you wish to calc the odds dart DOES NOT hit point in circle.

Answer 10

oh, thx :) medal and fan:)

Answer 11

there u go :)

Answer 12

bye ;-)

Answer 13

cool