Area and Perimeter Practice Test 4

Here, 2(x + y) = 340 m
Again, area of boundary = [(x + 2) (y + 2)] – xy = xy + 2(x + y) + 4 – xy
= 2(x + y) + 4 = 340 + 4 = 344 m
Hence, cost of gardening = 344 × Rs. 10 = Rs. 3440