Question

A square shaped park ABCD of side 100m has two equal rectangular flower beds each of size 10m × 5m (Fig.). Length of the boundary of the remaining park is

(A) 360m (B) 400m (C) 340m (D) 460m

Answer 1

(B) 400m

We know that, Length of the boundary = Perimeter of boundary

Given, two rectangular flower beds each of size 10m × 5m

So, perimeter of remaining park = 90 + 5 + 10 + 95 + 90 + 5 + 10 + 95

= 400 m