Answer:
702 ft^2
Explanation:
Steps to answering this question
1. determine the area of the singles court
area of a rectangle = length x width
27 x 78 = 2106 ft^2
2. Determine the width of the doubles court
27 + 9 = 36FT
3. Calculate the area of the doubles court
area of a rectangle = length x width
78 x 36 = 2808 ft^2
Find the difference in areas
2808 - 2106 = 702 ft^2