I dont know how to do this

Each of the four sides of a swimming pool measures 9 meters. the pool is 5 meters deep. how much water will be needed to fill it completely? a. 45 cubic meters b. 81 cubic meters c. 225 cubic meters d. 405 cubic meters reset next

Solve -2(4y + 6) = 52. 5 -5 8 -8 and !

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?