Use a protractor and get it to 2 centimeters and draw that circle.YOUR DONE ENJOY
4cm
Area = Pi(r)2 - A circle with a radius of 12 centimeters has an area of 452.39 square centimeters.
3/(2*pi)
When you draw a circle in math, and you draw a triangle inside of it, 2 of the lines should be the radius of the circle, and the third (bottom) line that is not the radius is the chord.
The perimeter of a quarter circle is 2 radii plus a quarter of the circumference of the whole circle: → 2 × radius + ¼ × 2 × π × radius = 32.13 cm → radius × (2 + π/2) = 32.13 cm → radius = 32.13 ÷ (2 + π/2) cm ≈ 9.00 cm