Question

Inside a square garden of side 158m a road 4m wide is built all around.what is the area of the remaining part of the garden

Answer 1

Area of the garden total = 158 * 158 = 24, 964 m²

The Area of the road is the area of two yellow regions and the two violet regions.

Area of the road = 2 * 158 * 4 + 2 * 150 * 4 = 2, 464 m²
Area of the remaining part of the garden = 22,500 m²

Answer 2

length of square garden = 158m
width of road = 4m

Area remaining is a square of side= 158 - 2×4 = 150m
Area remaining(green part) = 150² = 22500m²