The distance around any object is called its perimeter. The perimeter of a circle has a specific formula: 2(pi)r where pi is a number that is approximately 3.14 and r represents the circle's radius. In this case we are given the circle's diameter, however remember that the diameter of a circle equals two times its radius. So if: d = 50' and d = 2r Then r = 25' Now plus this radius into or equation to get: 2(3.14)(25) = 157' To get the distance around this circle 8 times, multiply the perimeter by 8: 157' * 8 = 1,256 feet
Oh, dude, the radius of a wheel is just half of the diameter, so you take 27.6cm and divide by 2 to get 13.8cm. Like, that's the distance from the center to the outer edge. But hey, who's measuring anyway, right?
Since it'll be rolling around the outside of the circle, the distance traveled will be in some multiple of the circumference. So, dividing the distance by the circumference will give the answer. C = πD = 6π revolutions = distance / circumference = 108π / 6π = 18 revolutions
A 12-inch wheel has a diameter of 12 inches, which is 1 foot. The circumference of the wheel is π (pi) times the diameter, or π feet. A mile is 5,280 feet, so the 12-inch wheel must turn 5280/π or about 1,680.676 times.
A wheel is in the shape of a circle. The formula for the circumference of a circle is 2πr where r is the radius. But, the diameter of a circle is twice the radius so this equation can be written, Circumference = πd where d is the diameter. The Circumference is therefore π times as big as the diameter, π = 3.142 or 22/7 approx.
The radius will be half the diameter which is 20/2 = 10 inches
wheel diameter times pi times number of rotations
A larger diameter wheel rotates a fewer number of times to cover the same distance as a smaller wheel.
50,020 times
To accurately measure the diameter of a bike wheel, use a tape measure or ruler to measure the distance across the wheel from one edge of the tire to the opposite edge. Make sure to measure from the center of the wheel to get an accurate diameter.
Rotations and distance tells you about the circumference and this tells you about the diameter. How about a specific problem?
Assuming this question does not want to account for the axel of the wheel, or the rim around the wheel, we know that the spoke is equal to the radius of the wheel. And we know that the radius is equal to 1/2 times the diameter. So, 2(r) = d 2(26) = 52. So, the diameter is 52 cm long.
They measured the distance the wheel traveled on the ground which would be the same as the circumference of the wheel. If they then measured the diameter of the wheel and divided the circumference by the diameter they would have a value for pi.
36 pi
Circumference is diameter times Pi, you do the math.
Linear distance of one revolution = 3.14 x diameter = 3.14 x 20 = 62.8 meters
To understand wheel sizes better, focus on the three main measurements: diameter, width, and offset. The diameter is the size of the wheel from one side to the other, the width is the distance from the inner edge to the outer edge, and the offset is the distance from the center of the wheel to the mounting surface. These measurements will help you choose the right wheel size for your vehicle.
Oh, dude, the radius of a wheel is just half of the diameter, so you take 27.6cm and divide by 2 to get 13.8cm. Like, that's the distance from the center to the outer edge. But hey, who's measuring anyway, right?