OpenStudy (anonymous):

Andy wants to build a circular concrete patio in his backyard and install a jungle gym on top of it. One 80-lb bag of concrete will be enough for 2 square feet. If he wants the diameter of the patio to be 10 ft, how many bags of concrete will he need to purchase?

1 year ago
OpenStudy (anonymous):

A. 20 B. 40 C. 80 D. 158

1 year ago
OpenStudy (anonymous):

Try doing the cross method:|dw:1450244055008:dw|

1 year ago
OpenStudy (anonymous):

So your answer is 40 which id B

1 year ago