Question

In length and breadth are in ratio 4ratio 3 if its perimeter is 420m find its area

Answer 1

2 (l+b)=420

2l×2b=420

2×4x + 2×3x = 420

14x=420

X=420/14=30

4×30=120

3×30=90

Area of rectangle= l×b

120×90=10800