A rectangular living room measures 12 feet by 10 feet. A carpet placed on the floor leaves a border 2 feet wide all around it. What is the area of the border?

A square has sides that measure 15 cm. A rectangle has a length of 18 cm. The perimeter of the square is equal to the perimeter of the rectangle. What is the area of the rectangle?

Kevin can mow a square lawn that is 30 meters of each side in 45 minutes. If he works at the same rate, how many minutes will it take Kevin to mow a square lawn that measures 60 meters on each side?

To get to school, Chad must either walk around a circular lake or canoe across it. The diameter of the lake is 2 miles. How much shorter is his trip if he canoes across the lake rather than walks around it? For the value of pi, use 3.14.

Chloe agreed to wash all of the windows in Todd’s giant art studio. There are 400 square panes of glass each measuring 2.5 feet on each side. Todd offered to pay 10 cents per square foot. Chloe said she would rather get paid 60 cents a pane. Todd agreed and was happy that he was actually going to save money. How much money will Todd save?