A circular grass lawn of 35 metres in radius has a path 7 metres wide running around it on the outside. Find the area of path.	Select the correct option:
A) 1694 m 2
B) 1700 m 2
C) 1598 m 2
D) 1500 m 2
E) none of thes

Rationale: radius of a circular grass lawn ( without path ) = 35 m ∴ area = π r 2 = π ( 35 ) 2 radius of a circular grass lawn ( with path ) = 35 + 7 = 42 m ∴ area = π r 2 = π ( 42 ) 2 ∴ area of path = π ( 42 ) 2 – π ( 35 ) 2 = π ( 422 – 352 ) = π ( 42 + 35 ) ( 42 – 35 ) answer a
Answer: A