Question

If the length and breadth of a room are $15m$ and $10m$ respectively, then

Perimeter : Area $=$________ $\left[1:3/1:6\right]$

Answer 1

Given that,

Length of the room $=15m$

Breadth of the room $=10m$

Area of the room $=15\times 10=150m^2$

Perimeter of the room $=2(15+10)=50m$

Now, ratio of perimeter to the area of the room $=50:150$

Lowest form of $50:150=\frac{50}{150}=\frac{1}{3}=1:3$ ( Divide both $50$ and $150$ by their HCF $50$)

Hence, Perimeter : Area$=$$1:3$