Here is a blog post for math work. Outside we measured the things we were interested in and we converted the result into square meters.
this plant is 1 meter 15 cm high and it is also 0.00115 KMs high.
The John Inge sign is 1m 5cm long it is also 0.0015 Kms long.
This water fountain is 1M 12CM high. And it is 0.00112 KMs high.
This table is 1M 10Cm high and 0.00110 KMs high.