A circular pond of diameter 40m is surrounded by a grass path 5m wide. Find the area of this path.

A circular pond of diameter 40m is surrounded by a grass path 5m wide.

1.	A circular pond of diameter 40m is surrounded by a grass path 5m wide. Find the area of this path.
Answer» Sorry I thought that 40m is radius.R=20 and r= 25 Given :diameter of the circular pond is 40mtherefore the radius =40/2=20mthe width of the grass path=5mtherefore the radius of the outer circle =25mArea of the pond={tex}\\frac{22}7\\times20\\times20{/tex} =1256m2Area of the outer circle={tex}\\frac{22}7\\times25\\times25{/tex} =1964.28m2Area of the grass path =Area of the outer circle -Area of the pond =1964.28-1256 =708.28m2 Area of Path=π(R²-r²), where R= 40+5=45 and r=40