Final answer:
The area of the semicircular section of the lawn can be found using the formula A = (22/7) × r².
Step-by-step explanation:
To find the area of the semicircular section of the lawn, we can use the formula A = πr². Since we are given the value of &pi as 22/7 and not the exact value, we can substitute it into the formula. The correct formula for finding the area of the semicircular section of the lawn is A = (22/7) × r².
To calculate the area, you need to know the radius of the semicircle. Once you have the radius, simply substitute it into the formula and perform the calculations to find the area. Option (a) (A = (22/7) × r²) represents the correct formula for finding the area of the semicircular section of the lawn.