Make your own free website on Tripod.com
Probability
Bitmap Image
What is the probability that a dart tossed at random will land in the yellow area of the figure above.
  Step 1:  Find the area of the large rectangle.
Step 2. Find the Area of The yellow rectangle.
 A(1) = lw  
A(1) = 10(5)
A (1)= 50  square units
A (2)= lw  
A (2)= 4(7)
A(2) = 28 square units
Step 3: Divide the part by the whole
28/50
14/25 probability of landing in the yellow area.

Bitmap Image
  Step 1:  Find the area of the large circle.
The large circle's radius is 7
Step 2. Find the Area of the blue area.
Subtract the area of the white circle from the area of the large circle.  The radius of the white circle is 1
                  2
A = pr
                  2
A = p7
A = 49p

                                    2      
A = 49p - pr
A = 49p- 1p
A = 48p

Step 3: Divide the part by the whole
48p/49p
48/49 probability of landing in the blue area.


Bitmap Image


Bitmap Image
The square is divided by the diagonal.  The diagonal divides the square into two equal parts.  Therefore, the probability of a dart landing in the green area is 1/2.
Bitmap Image
The circle is divided into four equal parts.  The red section is 1/4 of the circle. Therefore, the probability that a dart will land in the red area is 1/4.
Bitmap Image
The circle above is divided into six equal parts; two of the part are red.  The probability that a dart will land in a red area is 2/6 or 1/3.
Bitmap Image
The circle above is divided into three equal parts; two of the parts are red.  The probability that a dart will land in the red area is 2/3.
Bitmap Image
The circle above is divided into six equal parts.  Three of the parts are red.  The probability that a dart will land in the red area is 3/6 or 1/2.
Bitmap Image
The probability that a dart will land in the red area is 1/3.  The probability that a dart will land in the white area is 2/3.