In the neighborhood park there is a circular grassy picnic area, but half of the grass has died. the city wants to replant the grass, but needs to know the square footage of the damaged area. if the circular picnic area is 150 feet across, what is the square footage of the damaged area? let pi = 3.14
a) 471 sq. ft
b) 8831.25 sq. ft
c) 17662.5 sq. ft
d) 35325 sq ft

What is the average rate of change for this function for the interval from x=2 to x=4 ?

What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radil and altitudes is 4: 3? 23

Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8  feet of ribbon. he cut off one piece that was 3 5/8  feet long and another piece that was 1 1/4  feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.