A flower bed has the shape of a rectangle 21 feet long and 9 feet wide. What is its area in square yards?
To find the area of the flower bed in square yards, first convert the dimensions from feet to yards:
21 feet = 21/3 = 7 yards
9 feet = 9/3 = 3 yards
Then, calculate the area in square yards:
Area = length x width
Area = 7 yards x 3 yards
Area = 21 square yards
Therefore, the area of the flower bed is 21 square yards.