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How do you multiply two times pi times two?
2 x pi x 2 = 4 x pi
What is the formula for finding the circumference of a circle?
The formula for the circumference of a circle is 2πr, or πd.C = pi x d (pi x diameter)or:C = 2 x pi x r (2 times pi times radius)(Pi or π is approximately 3.1416)
How do you find the circumference and area of a circle from the radius?
The circumference C is pi times the diameter of the circle, which is twice the radiusC= pi *2rThe area A is pi times the radius squaredA = pi r2where pi = about 3.14159Example:For a radius of a 3 cmC = pi x (3 x 2) = pi x 6 = about 18.85 cmA = pi x (3)2 = pi x 9 = about 28.275 cm2
The radius of a circle is x plus 4 what is the circumference?
Circumference = (2) x (pi) x (Radius)= (2 pi) times (X + 4)= same as (2 pi X) + (8 pi)= same as [ pi (2X + 8) ]
What does pi times pi equal?
3.14 x 3.14 = 9.8596
What is pie times x?
"Pi" is just a number. The product of (pi) times 'x' depends on the value of ' x ', and it changes immediately as soon as the value of ' x ' changes.
If x equals 2 what is x times pi?
6.28
What is the equation for circumfurance?
Pi x twice the radius or pi times the diameter
How do you find the exact circumference of a circle?
pi times the diammeter 3.14159 x diameterDan's answer:circumference= pi X diameter.2pi X Radius=Pi X Radius (x2)
What is pie x pie?
I'm assuming you mean pi x pi. pi itself is 3.1415926535897932384626 when squared (times by itself) it comes to 9.86960440109
What is pi squared times pi?
n squared x n = n cubed but that does not equal 21. ---------------------------------------------------------------- Here is the correct version: We are looking for Pi squared times Pi which is Pi cubed Now Pi can never be written out exactly because its decimal number goes on for ever. However we can take a good approximation to Pi as 3.142 So Pi cubed = 3.142 x 3.142 x 3.142 = 31.018339 = 31.02 to 4 places.
What is the formula for finding the circumference of a circle when you have the area?
The formula for the area of a circle is given by pi times radius times radius.The formula for circumference of a circle is 2 times pi times radius.As area is known, the radius is easy to work out, like thisFrom Area = pi X r X rthenradius = (square root of (area/ pi))From circumference = 2 X pi X radiusthenCircumference = 2 X pi X (square root of (area/pi))This can be simplified toCircumference = 2 sqrt(pi X area)You will remember that pi stands for an endless decimal ratio that starts 3.142...A:Divide the area by pi.Get the square root of the answer. That's the radius.Double it. That's the diameter.Multiply the diameter by pi. That's the circumference.
