Stanley has two large books he needs to store in his locker at school. His math book measures 2.5 inches thick × 6 inches long ×
9 inches tall. His social studies book measures 3 inches thick × 7 inches long × 10 inches tall. What is the total volume of Stanley's two books?
A) 90 cubic inches
B) 135 cubic inches
C) 210 cubic inches
D) 345 cubic inches
You could also say. 13 x --- = --- 1 7 Multiply across. 1x=13×7 1x =91 Divide both sides by one. x=91. 91 cups of yoygurt are needed to make 7 Smoothies. Or you could do it the easy way. whatever makes you happy. :)
