What is the area of grass (in sq ft, marked in green) to be planted if two walkways pass a rectangular park as shown?
(All values in feet)

Q. A square park with a total area of 625 sq ft needs to be fenced. If the fencing costs $1.6 per feet, what will the total cost of fencing the whole park be?

Q. A cow was left to graze in a circular field of 300 sq. ft. The area grazed by the cow is shown in pale yellow color, and the area of grass remaining is shown in green. Find the area grazed by the cow.

Q. A rectangular parking space is marked out by painting three of its sides. If the length of the unpainted side is $9$ feet and sum of the lengths of the painted sides is $37$ feet, then what is the area of the parking space in square feet?

Q. A square garden $10$ feet long needs to be surrounded by a walk of $2$ feet wide on only three of its sides. What is the area of the walk?

Q. A rectangular park, whose grass area is $10800$ sq. m. and the sides are in the ratio of $4:3$. Calculate the wire required to cover outer boundry of the park.