Help please! I need to find the length of EF to the nearest tenth of a foot. Look at the picture above. Thanks!

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

What is the total surface area of this square pyramid?

Suppose a store sells an average of 80 cases of soda per day. assume that each case contains 24 cans of soda and that the store is open 10 hours per day. find the average number of soda that the store sells per hour.