A circular 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?

Respuesta :

Find the area of gravel path
gravel path area = Total area- area of the pond 
                           = pi rt^2 - pirp^2
where
rt= 250ft
rp=200ft
gravel path area = 70685.83ft^2
the area of the gravel path is equal to 70685.83ft^2