112 PROP. XIII. Use. To find the perp, when the three sides of a triangle are given, and thence the Area. BOOK II. PROP. XIV. PROB. To describe a square that shall be equal to a given rectilineal figure. SOL. 45. I, Def. 30, Psts. 2. 3; 3. I, 10. I. DEM. 5. II, Def. 15. 16. I, 47. I, Ax. 3, 1. I. 118 Aly & Arith. I'm Given the fig. 1 = ab 36: in Area: required the side E IL = of a square equal in Area. |