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Q: A diameter of the circle in the drawing above is the segment?

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(bar) AC

Circumference is equal to Diameter x Pi. So the circumference is 10π

The radius is half the diameter, diameter and radius are basically the same except for as mentioned above. Radius is also your mum.

If available, a protractor or a right drawing triangle can be used. If restricted to ruler and compass, a right angle can also be constructed to a given line segment by drawing a circle, with a radius less than the length of the line segment but more than half that length, with each end of the line segment as a center and connecting the two points of intersection of the two circles above and below the line. The line connecting to two intersections of these circles will form as right angle to the line segment.

Pi ( 3.142 approx.) is the amount of times the diameter of a circle can be measured along the circumference of a circle. We know that Pi multiplied by the diameter of the circle is equal to it circumference. So we write C=PiD This means, as it says above, that a certain number of "Pi's" will be equal to the circumference.

57 in² The answer above is correct. Here is the formula Area of a circle = pi X r2 r = radius = 1/2 X diameter pi = 3.1416

If you mean a circle with a diameter of 28 cm, the circumference is 87.96459430051421067695392... using pi to 23 decimal places.* * * * *The answer above implies that the diameter of the circle was measure to an accuracy of 23 decimal places. Very unlikely, I suggest!

Pi ( 3.142 approx.) is the amount of times the diameter of a circle can be measured along the circumference of a circle. We know that Pi multiplied by the diameter of the circle is equal to it circumference. So we write C=PiD This means, as it says above, that a certain number of "Pi's" will be equal to the circumference.

pi*radius2 = 1693.14 square inches Make the radius the subject of the above then double for the diameter diameter = 46.430 inches to 3 decimal places

That drawing shows to what a place looks like from above is

Set a compass to draw a circle with a radius that's more than half the length of the line segment but less than the whole length.Put the compass point at one end of the segment and draw an arc above the middle of the segment and another below the middle of the segment.Put the compass point at the other end of the segment and again draw arcs above and below the middle of the segment, intersecting the first two arcs.Draw a line connecting the point where the two arcs intersect above the segment and the point where they intersect below the segment.That's your perpendicular bisector.

Area: pir*radius2 = 201 Making the radius the subject of the above gives it a value of 7.99876785 feet and double this is 15.9975357 or about 16 feet which is the diameter.

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