Acircular pond is to be surrounded by a gravel path. use the diagram to find the square feet of gravel needed if we know the pond has a radius of 200 ft and the radius of the whole space is 250 ft? a. 65,523 ft2 b. 57,234 ft2 c. 86,270 ft2 d. 70,686 ft2 image:

70686 sq.ft.

Step-by-step explanation:

Given : Radius of the whole space is 250 ft.

            Radius of pond is 200 ft.

To Find: the square feet of gravel needed

Solution:

Area of whole space =

                                  =

                                  =

Area of Pond =

                                  =

                                  =

So, the square feet of gravel needed =

                                                              =

Hence 70650 sq.ft. of gravel is needed.

So, Option D is approximately equal to the obtained answer

So, Option D is true.