We define the hectare as an SI accepted metric system unit of area which is equal to 100 acres(10,000 m^{2})

m^{2}= m x m. So km^{2} = 0.001 x 0.001

Try to think about the sides of isosceles triangle. Let the unequal length = x cm Equal lengths = (2x + 5) cm

Subtract the width of cemented path from length & width of the park.

How to find area of square shape? Area of square = Side x Side

We define the hectare as an SI accepted metric system unit of area which is equal to 100 acres(10,000 m^{2})