Question

would this be 1/4? for the probability that a point chosen at random in the figure lies in the shaded region

Answer 1

yes, it is.

Answer 2

okay.. would this one be 8/16

Answer 3

4/8=2/4?

Answer 4

hmm.. Is there no gaps between the two circles? and no gaps between the circle and the rectangle?
I can't get a fraction, but I can get a decimal probability

Answer 5

Area of the shaded part = 128-100.531=27.469
Area of the rectangle = 128
Probability - 27.469/128=0.2146

Answer 6

okay.. can u help me with this one?

Answer 7

This one i'm unsure.
I "assume" it's a isosceles right triangle
Sin 45º=height/10 => height = 7.07106
Area of triangle = 7.07106*7.07106/2=25
Area of circle = 78.5398
Probability = 25/78.5398=0.3183
The need for assumption isn't good... need a theory for it somehow... but that's all i can do.. sorry

Answer 8

okay thank you