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3019.07cm²
The formula is: area = 3.14 (pi) times radius squared.

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7y ago
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7y ago

Exact area of circle: 961*pi square cm

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Q: What is the exact area of a circle with a radius of 31 cm?
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Continue Learning about Geometry

How many linear feet in a 31 foot diameter circle?

The circumference of a circle with a 31 foot diameter is 97.4 feet, approx.


What is the circumference is a circle 31 inches in diameter?

Circumference of circle: 31*pi = 97.389 inches rounded to 3 decimal places


What is the measure of an arc that is intercepted by an inscribed angle of 31 degrees?

That will depend on the circumference of the circle which has not been given


Can a shape have an area of 18 and a perimeter of 28?

Yes it can. If it is a rectangle then the sides would be (7+√31)x(7-√31).


If angle ABC measures 124 degrees What is the measure of arc AC'?

If you are considering a circle, where the central angle is 124o of 360, then, we have the diameter, 2r, multiplied by pi, and then a twist, multiplied by the ratio of the angle (ABC in this case) and 360 (the total measure of the circle). Therefore, we have:2pi(r) * (124/360) = 2pi(r)*(31/90) = 31/45 pi * r.However, with the information you provided, we are unable to deduce a complete numerical answer for arc AC.However, considering you meant that the point B is located on the circumference of the circle, then that is a different matter.We now have a circle, with the diameter shown, and chord BC is given, we can draw a line from the center of the circle where the diameter is, and connects with point C. Thus, we have another radius section (DC, given D is the center). Then, we have the radius stretching from point D to B. Thus, we have an isosceles triangle. This means that angle C = angle B. Now, because there is 180 degrees in a triangle, and angle C = angle B, we have:180 - 2a = a2Now, a line is also 180 degrees so subtracting 180 degrees, we have:180 - (180 - 2a) = Angle D180 - 180 + 2a = Angle D2a = Angle DNow, we know that a is the angle, thus, subsituting in the equation, we have 2(124) = 248o.Using the above information, we could multiply by 2 (248 is twice of 124), thus giving 62/45 * pi* r. (2pi*r * 248/360 = 2pi * r * 31/45 = pi * r * 62/45)

Related questions

What is the area of a circle with a radius of 31cm?

A circle with a radius of 31 cm has an area of 3019.07 square cm.


What is the radius of 31 inch circle?

radius of 31 inches


What is the circumference of a circle with a radius of 31 meters?

The circumference of a circle with a radius of 31 meters is about 194.8 meters.


What is the area of a circle in cm if its radius is equal to its circumference divided by its diameter showing work?

Improved Answer:-Its radius: circumference/diameter = piIts area: pi*pi squared = 31 square cm rounded to nearest integer


How many square feet in a circle with a radius of 31 feet?

3,017.54sq ft


What is the circumference of a circle that has a radius of 5 feet?

31 feet 5 inches


What would be the exact circumference of a circle if a diameter in 31 inches?

31x3.1416=circumference


What is the equation of the points (31) and has a radius length of 2?

If you mean a circle center at (3, 1) and a radius of 2 then the equation of the circle is (x-3)^2 +(y-1)^2 = 4


What is radius of circle with a circumference of 31 feet?

Circumference of a circle = (pi) x DiameterDiameter = 2 x radiusCircumference = (pi) x (2 x radius)(2 x radius) = Circumference/piRadius = Circumference/(2 x pi) ==> Over to you.


What is the circumference of a circle with 31mm radius?

2*pi*31 square mm or pi*62 square mm


What is the radius if a circle is 5 cm Estimate the circumference?

I'm not sure what you mean. If the radius is 5, the circumference is 10pi. (about 31 and a half) If the circumference is 5, the radius is 5 divided by 2pi. (about four fifths)


What is the volume of a right cylinder with radius 14 and height 31?

The volume of the right angled cylinder is = 22/7 * r2 *h where r is the radius of the radius of the circle & h is the height of the cylinder the ans of ur question is 22/7*14*14*31=19096 unit2