Plane geometry, with problems and applications (1910)
Slaught, H. E. (Herbert Ellsworth), 1861-1937, Lennes, N. J. (Nels Johann), 1874- joint author · Boston, Allyn and Bacon · leaf 262
60°. REVIEW AND FURTHER APPLICATIONS. 249 (J) Find the ratio r:r,r being the base DE of the arch and r theradius of the circle 0. Suggestion. (?£» = 2 DL, GO = 2 r, and OD = V(r+r)-r^=V2 n- + r2. (c) By what fraction of a -will the circles 0 and 0 fail to toucheach other? (rf) Find the radius of…
Geometry, Plane
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