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A point in the figure is selected at random. Find probability that the point will be in the shaded region

A point in the figure is selected at random. Find probability that the point will-example-1

2 Answers

4 votes

Answer: 20%

Step-by-step explanation:

1-22/7*4

= 28-22/28

=6/28

= 3/14

rounded: 20%

User OrionMelt
by
6.0k points
2 votes

Answer:

  • The probability that the point will be in the shaged region is 0.79

Step-by-step explanation:

The probability of finding the random point in the shaded region is:

  • P = area of the shaded region / total area

The shaded region consists of two semicirles inside a square, with the diameters of the semicircles equal to the side length of the square:

  • Call 2r the side length, then r is the length of the radii of the semicircles:

  • Area of one semicirle = (1/2) π r²

  • Area of the two semicirles = 2 × (1/2) π r² = π r²

  • Area of the square = (2r)² = 4r²

  • P = area of the two semicirles / area of the square = π r² / 4r² = π/4 ≈ 0.79
User Abdennour TOUMI
by
4.9k points