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That's the formula for the circumference of a circle, when you know the radius. What you do is multiply all three together. Pi is approximately 3.14, and r stands for the radius. The result of the multiplication is the circumference.
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What is the formula for circumference to area of a circle?
2 pi r and pi r 2
What is the formula for a hemisphere?
surface area = 0.5(4[pi]r^2) + [pi]r^2 Volume = 0.5((4[pi]r^2)/3)
What is the formula for surface area of a cylinder?
Surface Area = 2(pi r 2) + (2 pi r)* h
What is the formula for the area of a circle with radius r?
A = PI(r)^2
Formula for area of circle?
A=pi(r)2 r=radius
What is the circumference of a circle with a radius of 8 feet?
use the formula 2(pi)r=16pi use the formula 2(pi)r=16pi use the formula 2(pi)r=16pi use the formula 2(pi)r=16pi use the formula 2(pi)r=16pi
What is circumference of a circle with a radius of 8 feet?
use the formula 2(pi)r=16pi use the formula 2(pi)r=16pi use the formula 2(pi)r=16pi use the formula 2(pi)r=16pi use the formula 2(pi)r=16pi
What is the formula for circumference to area of a circle?
2 pi r and pi r 2
What is the formula of a semicircle in perimeter?
The perimeter of a semicircle with radius R is pi*R + 2*R = R*(pi + 2)
What is the formula in getting the surface area of the cylinder?
2 pi r 2 + 2 pi r h
What is the formula for the lateral surface area of a cylinder?
2(pi r 2) + (2 pi r)* h
What is a formula for a circle?
2(pi)r^2
What is the formula for finding the circumference of a semicircle?
2 pi r = circumference. 1/2 of that is pi x r. pi is 3.142
What is the formula for a hemisphere?
surface area = 0.5(4[pi]r^2) + [pi]r^2 Volume = 0.5((4[pi]r^2)/3)
What is the formula for surface area of a cylinder?
Surface Area = 2(pi r 2) + (2 pi r)* h
What is the formula for a cylinder?
2*pi*r2 x 2*pi*rhx=timedSurface Area of a Cylinder = 2 pi r 2 + 2 pi r h Volume of a Cylinder = (2 pi r 2) height
What is formula of perimeter of quadrant?
In a circle of radius, r, perimeter of quadrant = pi*r/2 + 2r = r*(pi/2 + 2)
