You can multiply a radius in any unit of length that you like. It all depends on the application
6 inches. always multiply radius by 2 to get diameter
Multiply the radius by 2 to get the diameter. Then multiply the diameter by pi to get the circumference. Example: If radius = 2 inches, diameter = 4 inches circumference = 4 x pi = 4 (3.1416) or about 12.57 inches
There are 231 cubic inches in a gallon. so multiply the radius by the height and the pie. There are 231 cubic inches in a gallon. so multiply the radius by the height and the pie.
the formula is C= 2(3.14)r (the C stands for circumference and the r stands for radius) so you multiply 3.14 (pi) by the radius, then multiply that number by 2. if your radius was 12 inches, you'd multiply 3.14 x 12 = 37.68 then you'd multiply that by 2, giving you C= 75.36 inches
Multiply the radius by 2 x pi.Multiply the radius by 2 x pi.Multiply the radius by 2 x pi.Multiply the radius by 2 x pi.
256 Pi. The area of a circle is equal to the radius square multiply by pi
Multiply the radius by 2 x pi.
Okay if the radius is 3 inches then that's half the diameter so you do 3 times 2 and then you get 6 then you multiply 6 and 3.14 and you get.....
It is not possible if you only know the radius. A cylinder with a radius of 8 inches could be any height.
you take the radius, square it, then multiply it by 3.14 and there is the area
Assume the tire has the shape of the circle, in that case, you just multiply the radius by 2 x pi to get the circumference.
If 27 inches is the diameter, then that is the diameter. If 27 inches refers to the radius, you must multiply it by 2 to get the diameter.