Area of Polygons Answers

A blackboard has an area of 28 ft2 and a perimeter of 22 ft. What are the dimensions of the board?

Bruno is sewing a large rectangular tablecloth for a restaurant. He has 30 square feet of fabric, and the length of the table cloth needs to be 7.5 feet. What is the width of the tablecloth if he uses all of the fabric?

A square garden has a side length of 5 ft. What is the area of the garden?

What is the area of the triangle?

What is the area of the triangle?

A trapezoid has bases that measure 10 cm and 6 cm. The height of the figure is 15 cm. What is the area of the trapezoid?

What is the area of the parallelogram?

If one side of a square notebook measures 20 cm, what is the area of the front cover of the notebook?

The standard size of a rectangular placemat is 14 inches by 16 inches. How much fabric is needed to make 6 standard placemats?