Final answer:
To calculate the cost of putting a fence around the rectangular lawn, determine the perimeter of the lawn and multiply it by the cost per yard. The formula for the perimeter of a rectangle is 2(Length + Width).
Step-by-step explanation:
To find the cost of putting a fence around the rectangular lawn, we need to calculate the perimeter of the lawn. The perimeter of a rectangle is found by adding all of its side lengths. In this case, the length of the lawn is given as 26 yards and the width is not provided. Let's assume the width is 'w' yards.
The perimeter of the lawn is 2(Length + Width), so it would be 2(26 + w) yards. The cost of installing a fence is $6.00 per yard, so the total cost would be 6(2(26 + w)), or $12(26 + w).