Question

please answer and also explain why the answer is different in squares
For example 9cm = 90 mm but in square answer is different why? and what is
cubic metre is it different than normal one? ​

Answer 1

Answer:

As 1 cm = 10mm

But if it is 1cm*1cm =10mm*10mm

1cm^2= 100mm^2

Similarly

1 cm ^3 = 1000mm^3