What is 670 cm^2 written as a decimal rounded to the nearest hundredth?

To write 670 cm² as a decimal rounded to the nearest hundredth, you divide 670 by 100 and round the result to the nearest hundredth.

670 ÷ 100 = 6.70

Rounded to the nearest hundredth, 6.70 is equal to 6.70 cm².