Solution: Let the length of a rectangle be a and the width be b, and a/b=6/5 from the known conditions.

Circumference s actual size = 22 *1000 cm = 22000 cm = 220 m.

∫A+B is half the circumference, that is, A+B = (1/2) * S =110m.

Substitute a+b= 1 10 from a/b=6/5 and a = (6/5) * b.

b=50m

Thereby obtaining a=60m.

Rectangular land area A=60*50m? =3000m？

The building area is 1500m?