Area = 345 = pi*r2
So r = 10.48 cm
Area of a circle = (pi) R2345 = (pi) R2R2 = 345/piR = sqrt(345/pi) = 10.479 cm (rounded)There you are. That's the radius, complete with the working out. You havethe answer, and you've learned nothing, just as you requested.
Area of a circle in square cm = pi*radius squared
A circle with a radius of 3 cm has an area of 28.27 square cm.
A circle with a radius of 25 cm has an area of 1,963.5 square cm.
A circle with a radius of 19 cm has an area of 1,134.11 square cm.
4 cm radius = Area of 50.26548 sq. cm.
A circle with a radius of 2 cm has an area of 12.57 square cm.
The area of a circle with a radius of 15 cm is: 706.9 cm2
A circle with a radius of 19 cm has an area of 1,134.11 square cm.
A circle with a radius of 3.8 cm has an area of 45.36 square cm.
A circle with a radius of 4 cm has an area of 50.27 square cm.
A circle with a radius of 4 cm has an area of 50.27 square cm.