Summing Circles
Finding the cumulative area of shrinking circles.
Author Archive for: corrill
Entries by InterMath
Inscribed Circle
Finding an estimation for the area of a circle.
Target Areas
Determine the area of a target formed by concentric circles.
Dalmatian Day
Cut various circles from paper measuring 9 inches by 12 inches. What’s the area of the circles and the percent of paper wasted after cutting out the circles?
Too Many Dogs
Determine how many dogs Elizabeth owns.
Getting Free
How should a prisoner arrange 200 balls so that the prisoner has the greatest possibility of going free?
Matching Socks
Determine the number of socks you should pull out in order to guarantee that you will have a pair.
Mystery Envelopes
Knowing what’s in one envelope, should you keep your envelope or switch and ask for the other one?
Getting on Base
How many hits would you expect your favorite baseball player to have in the next 15 at-bats?
Hitting the Bulls-eye
How many times would you expect to throw the dart until you hit the bulls-eye?