John builds a square dog pen that has an area of 81 square feet. He then builds a second pen that has an area of 64 square feet. Which is the closest to the percent of decrease in the area of the pens?

sorry, i don't know i just need points, i'm new here. chao

(a) the volume of the cone is 20/3 in3

hence, option a is correct.

we'll this would mean that the dunk tank and the bounce house are the same for 20 hours because the 2 represents that the two activities, and the 20 represents the amount of hours they both are. so with this said, it means that the answer is c. the costs for a dunk tank and bounce house are the same for 20 hours.

c.the costs for a dunk tank and bounce house are the same for 20 hours.

hope this .