Circles With Radius 4000 and Enclosed Triangle Small 320×292 Medium 640×584 Large 1024×934 Download Tiff Original 2400×2189 | (227.3 KB) Description Illustration of circle with radius of 4000, and triangle with 45 degree angle enclosed. Keywords 4000, 45 degrees, area, circle, circles, diameter, dimensions, radius, triangle Galleries Circles Source: Claude Irwin Palmer Library of Practical Electricity: Practical Mathematics For Home Study (New York: McGraw-Hill Book Company, Inc., 1919) 162
