What is a "9 inch circle"? Is that the circle's diameter ?
-- The circumference of a circle is [ (pi) x (diameter)].
-- Take that formula.
-- Look up the value of (pi), either in your math book or on line.
-- Put the value of (pi) in its place in the formula.
-- Put the diameter of the circle in its place in the formula.
-- Perform the indicated operation (multiplication).
-- Bada-bing, you'll have the answer.
-- Take a moment to learn the spelling of "circumference".
Since you probably didn't understand the big words used above you should just write down 28.26 inches
Pi (3.14) × the diameter Therefore, 3.14 x 2 = 6.28 inches
What measurement of the circle is equal to 49 inches? is it the radius?, the area?, the circumference? Without further information this question can not be answered satisfactorily.
pi times diameter. so about 3.14 times 9 feet= about 28.26
it is the circumfrance of a circle divided by pi.
Formula to find the circumfrance of a circle~(2)(3.14)r or (3.14)d
If the circumference (not circumfrance) is 31.4, the radius is 4.9975 units (to 4 dp).
The circumference of 9 inch diameter circle is about 28.27 inches.
Circumference of a circle = 2*pi*radius or pi*diameter
The diameter should be 7m.