The shape of cross section of a canal is a trapezium. if the canal is 10 m wide at the top and 6 m
wide at the bottom and the area of cross section is 72 sq. m, find its depth.

Name the most appropriate metric unit for each measurement

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?