Express the product of 2.2 mm and 6.00 mm

Just do 6 x 2.2

6 x 2.2 = 13.2

13.2mm^2

Explanation:

Multiply 2.0 by 6.00. 2x6=12

Then multiply 0.2 by 6.00. 0.2x6=1.2

Add the two products. 12+1.2 = 13.2

Put units on the end of the answer. (mm) (mm) = mm^2