Question

The perimeter of a square field in $8km$. Find its area in hectares.

Answer 1

Given perimeter of square field is 8 km

let 'a' be its side

then perimeter = 4a=8km

[a=2km]

we know 1 hectares =$0.01(km{)}^2$

area of filed =$a^2$

$=4k{m}^2$

then area of hectare = $\frac{400}{0.01}$ =400 hectares.