Question

A rectangular field is 24 yards in length and 81 feet in width.

Answer 1

Ok,
First, you have to make the measurements in feet. 24 yards = 72 feet
Then do 72 x 81 = 5832 square feet

Then,
First, you have to make the measurements in yards. 81 feet = 27 yards
Then do 24 x 27 = 648 square yards

Hope this helps :D