CLASS RACER FORUM - View Single Post - what is the formula to find the area of a circle with a 55 mm diameter????

BoydW · 07-21-2008, 09:13 PM

Comp387
The formula for finding the area of a circle/diameter is: Area= pi times the diameter squared and then divide the whole thing by 4. This will work for either the (SI) metric units or english units. You will want convert your SI units to English or vise vera before making your calculations. If you don't you will have to divide the result, if you are metric units, by (25.4mm/in) squared to get english units or if you are in english units, you will need to divide the result by (0.03937007874 in/mm)squared to get metric units. For a 55mm diameter, the area should be 2375.829mm^2 and 3.683in^2, (^2 is symbolic for squared) Hope this helps, Later, William

07-21-2008, 09:13 PM	#9
BoydW Junior Member Join Date: Oct 2002 Posts: 4 Likes: 0 Liked 0 Times in 0 Posts	Re: what is the formula to find the area of a circle with a 55 mm diameter???? Comp387 The formula for finding the area of a circle/diameter is: Area= pi times the diameter squared and then divide the whole thing by 4. This will work for either the (SI) metric units or english units. You will want convert your SI units to English or vise vera before making your calculations. If you don't you will have to divide the result, if you are metric units, by (25.4mm/in) squared to get english units or if you are in english units, you will need to divide the result by (0.03937007874 in/mm)squared to get metric units. For a 55mm diameter, the area should be 2375.829mm^2 and 3.683in^2, (^2 is symbolic for squared) Hope this helps, Later, William