Question

A dart hits the board. What is the probability

that it will hit in Region II, as a decimal to the
nearest tenth?

Answer 1

Answer: The probability is 0.5

Explanation:

The probability will be equal to the quotient between the area of region II, and the total area of the board (supposing that the probability of hitting in any place is equal)

The total area of the figure is equal to

Area = (15' + 35')*(8' + 20') = 50'*28' = 1400 in^2

Now, the area of region II is:

Region II = 20'*35' = 700

Then the probability is:

P = 700/1400 = 1/2 = 0.5