Oh, what a happy little question! Yes, 80mm does indeed equal 8cm. You see, there are 10 millimeters in a centimeter, so when you have 80 millimeters, it's the same as 8 centimeters. Just a joyful little conversion to brighten your day!
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Oh, dude, seriously? Yeah, 80mm equals 8cm. It's like converting inches to feet, but with the metric system. So, yeah, they're totally the same length, just in different units.
80mm equals 8cm
8cm is 80mm. 80/2 = 40 times longer
8cm = 80mm 80mm/2mm = 40 times greater
Since 1 cm = 10 mm 8cm = 80mm So, 80mm/5mm = 20 Therefore, 8cm is 20 times longer than 5 mm.
In order to solve this you first need to convert the cm value into mm. This is to give a number that's easy to work with, and has consistent units with the rest of the question. There are 10mm in a cm. Thus to convert from cm to mm, you need to multiply by 10. In this case we have 8cm. This converts to mm as 8x10 = 80mm. So the question is 80mm + 6mm. This works out at 86mm.