25% of a circle with radius 4 has the same area as what percent of a circle with radius 8?
A 6.25%
B 12.5%
C 25%
D 37.5%
E 50%

Asquare has a side that measures 11 units. what is the area of a circle with a circumference that equals the perimeter of the square? use 3.14 for π, and round your answer to the nearest hundredth. 1519.76 units2 379.94 units2 616.56 units2 154.14 units2

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?

Charlie tosses five coins.what is the probability that all five coins will land tails up.