15.26 mm. All you gotta do is convert the millimeters to centimeters, and that subtract. Make sure the decimal point is right, tho. :)
18 ÷ 3
= 6/1
Option [a] 6 to 1 is correct !
There is 1000 mm in one meter....
So..... .9 x 1000 = 900 mm
Standard form is the form I believe
