It is 400cm or 4 meters
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5 times 20cm = 1 meter
To find the percentage, you can use the formula: (20cm / 800mm) * 100. Simplifying this, you get (2.5 / 100) * 100 = 2.5%. Therefore, 20cm is 2.5% of 800mm.
It is: 15/200 times 100 = 7.5%
20cm +20% = 24cm
The area of a hexagon with a given side of 20cm is 1039.2cm2