if the circumference of a circle is reduced by 50?
440050
If circumference is reduced by 50%, radius is reduced by 50% . If r is the initial radius , new radius is r/2. = 25% of initial area. If circumference is reduced by 50%, it means radius is reduced by 50%.
375889
The circumference is the total length around the circle. It's equal to (pi x diameter) OR (2 x pi x radius). The area of the circle is the surface area enclosed by the circle, which is equal to pi x (radius ^ 2).
82543
The formula is simply this: C = πd. In this equation, "C" represents the circumference of the circle, and "d" represents its diameter. That is to say, you can find the circumference of a circle just by multiplying the diameter by pi.
218866
If you were asked to find the radius instead of the diameter, you would simply divide 7 feet by 2 because the radius is one-half the measure of the diameter. The radius of the circle is 3.5 feet. You can also use the circumference and radius equation.
1024445
Take the circumference of a circle and divide it by Pi. For example, if the circumference is 12.56, you would divide 12.56 by 3.14159 to get 4, which is the diameter of the circle. Use the diameter to find the radius by dividing the diameter by 2. For example, if the diameter is 4, the radius would be 2.
165875
That is, the circumference would be the length of the circle The area of a circle is pi (approximately 3.14) times the radius of the circle squared. The circumference is pi times the diameter if it were opened up and straightened out to a line segment.
33292
['The circumference of a circle can be found by multiplying pi ( π = 3.14 ) by the diameter of the circle.', 'If a circle has a diameter of 4, its circumference is 3.14*4=12.56.', 'If you know the radius, the diameter is twice as large.']
930614
References: Circumference = 3.1416 * Dia. or 3.1416 * 2r: 3.1416 is (pi); Dia is the diameter and r is the radius.
203799
The diameter of a circle is D=10 inches D = 10 inches . Therefore, the radius of the circle is 5 inches . Therefore, the circumference of the circle is approximately 31.41 inches .
471404
If the radius of a circle is doubled, the area of the circle will be quadrupled and the circumference will also be doubled.
192460
the formula for circumference of a circle is 2 x pi x r(radius).
684699
Perimeter of a Semicircle The formula for a circle's circumference, C, is C = 2 * pi * r, where r is, again, the circle's radius. A semicircle is half a circle, however, so we'll need to divide the formula for perimeter by two just like we did the formula for area. The perimeter P = pi * r.
701605
To calculate the circumference of a circle, multiply the diameter of the circle with π (pi). The circumference can also be calculated by multiplying 2×radius with pi (π=3.14).
492915
One of the unique qualities of a circle is that its diameter and circumference have a proportional relationship. This means that no matter what size the circle is, the proportional relationship, or ratio, between its circumference and diameter is always the same.
128872
The number 45 is half-way between 40 and 50. Numbers on the half-way point move up in value, so 45, rounded to the nearest 10, is 50. If a number is over 100, it can still be rounded to a nearest ten.
721278
Solve the equation for the diameter of the circle, d= C/π. In this example, "d = 12 / 3.14." or "The diameter is equal to twelve divided by 3.14." Divide the circumference by pi to get the answer.
407977
Understanding the Area and Circumference of a Circle. Factoid: The area of a circle is pi (approximately 3.14) times the radius of the circle squared. The circumference is pi times the diameter.