The diagonal of a cube is 20 cm. Identify the length of an edge. Round to the nearest tenth, if necessary.

Aswimming pool is a rectangle with semicircles on the end. the rectangle is 12 meters wide and 30 meters long. the diameter and width of the swimming pool are equal. sketch and label an overhead diagram of the swimming pool. find the area of the swimming pool floor.

Mario has $14.35 left in his wallet. he spent $148.43 for tablecloths. then, he spent $92.05 for napkins. how much money did mario have in his wallet to start with?

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?