Find the volume of a rectangular box having width 5 ft, length 7 ft and height 3 ft

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

Can someone tell me if this is perpendicular? !

Prism m and pyramid n have the same base area and the same height. cylinder p and prism q have the same height and the same base perimeter. cone z has the same base area as cylinder y, but its height is three times the height of cylinder y. the figures and have the same volume.