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What is 12.8 times pi?
When you multiply 12.8 times pi the exact answer is12.8 Pi, but you can round off the answer to40.192because pi is about equal to 3.14.
What is pi times r2?
pi times radius or diameter equals are of a cirlce
The radius of a circle is 5 inches What is the circumference of the circle?
Circumference is 2 times pi times radius, so the circumference of this circle is 2 times pi times 5, or 10 times pi. If a decimal answer is needed, pi is approximately 3.14, so C=31.4
What is Pi times radius times radius?
The answer is Pi times radius squared. Although you can't know anymore since you don't give what the radius is. Although, Pi can be simply referred to as 3.14
How do you find the diameter of a cylinder from the area of the base?
The area of the base of a cylinder = Pi times Radius squared. Diameter of a cylinder = 2 times Pi times Radius. To find the diameter derive the area of the base by Pi and then square root the answer. That will give you the value of the radius. Multiply that answer by 2 times Pi and you will have your answer.
What is pi r squared times three to the fourth power?
(pi) R2 x 34 = 81 pi R2
What is the circomefrince of a circle if the diamiter is34in?
The formula for calculating the circumference of a circle is 2*pi*radius. The radius is half of the diameter, so if the diameter is 34 inches, then the radius is 17. So we have two times pi times seventeen, which gives us 34 pi. If you need a more specific number, multiply 34 by 3.14. You get 106.76 inches.
Area of circle with radius of 5?
A=pi times R squared If the radius is 5, the area is 25pi
A penny has a diameter of 34 in What is the circumference?
The formula for the circumference of a circle is 2.pi.r where r= the radius, since the diameter is 2.r (two times the radius),the circumference will be pi.diameter. pi=3.14159... so for a diameter of 34mm the circumference=pi.34=106.8mm
What is the answer to number 34?
6.1 pi
What is pi times pi divided by pi plus pi minus pi times pi?
the same as pi squared, which is 9.86960440109
How do you use pi to determine circumference?
Circumference = pi times the diameter, or pi times 2 times radius. Area = pi times (radius squared)
What is the circumference of a circle with the radius of 17 inches in terms of pi?
Circumference = 2*pi*r = 34*pi inches.
Circumference of a circle with a diameter of 34 cm?
34 pi cm = 106.8 cm
How do you find the pi circumference and area of circles?
Area=pi times radius squared Circumference=pi times diameter or pi times radius times two
What are the two formulas for circumference?
C= 2 times pi and C= pi times diameter C= 2 times pi and C= pi times diameter
Why is circumference equal to 2 times Pi times r?
Circumference = pi times diameter or Circumference= two x pi x radius. Now remember the diameter of a circle is the straight line from one edge of the circle, through the centre to the opposite edge. The straight line from the edge to the centre is the radius, and then from the centre to the opposite edge is another radius. So the diameter is the length of two radii. Algebraically express as d = 2r. So Algebraically C = pi*d Substituting the 'd' for '2r' C = pi2r However in algebra coefficient numbers are expressed to the left. Hence C = 2pir Why 'C' is this expression I would have to go into some 'very heavy' differential calculus. Suffice it to say, the ancients found that the circumference traced by a donkey/mule driving water out of well was directly proportional to the diameter, twice the length of the tether(2 radii). From this they discovered that for however long the the tether and the circumference were. they had a constant of proportion C directly related to diameter. This is equated to C = kd And k = C/d , which was founf to be 3.141592..... which now call 'pi'. for any sized circle. So today in school you learn C = pi d or C = 2 pi r And for circular area(A) A = pi r^(2) The 'pi' youare given in school is proabably 3.14 , 3.1416 or 22/7 . However, these values are Approximatons, because 'pi' is an irrational number. Hope that helps!!!!!!
