Answer:
Terry's yard is greater than Todd's yard by 90 square meters.
Explanation:
We are given the following in the question:
Terry's yard dimensions:
Length,l = 18 meters
Width,w = 15 meters
Area of Terry's yard =

Todd's yard dimensions:
Length,l = 20 meters
Width,w = 9 meters
Area of Todd's yard =

Thus, Terry's yard is greater than Todd's yard.
Difference in area of yards
= Terry's yard area - Todd's yard area

Thus, Terry's yard is greater than Todd's yard by 90 square meters.