How do I find the area of a circle with the diameter of 18 yards
(Is the value 3.14 for pie and do not round your answer)

Problem melissa is her dad build a walkway in their backyard. the walkway will be 54 feet long and 1.5 feet wide. the local hardware store sells tiles which are 1.5 by 1.5 feet and come in boxes of 12. how many boxes of tiles do they need?

Two numbers have a sum of -19. one number is x. what expression represents the other number?

An octagonal prism has jow many lateral faces?