Given:
A rectangular field is 15 yards in length and 78 feet in width.
We will write the dimensions in the first in yards then in feet.
1 yard = 3 feet
So, the length = 15 yards = 45 feet
And the width = 78 feet = 26 yard
We will find the following:
What is the area of the field in square feet?
Area = length x Width = 45 x 78 = 3510 ft²
What is the area of the field in square yards?
Area = 15 x 26 = 390 yd²