Find the scale. a)Actual size 12cm, drawing size 3cm b)Actual size 45 feet, drawing size 5 inces Share with your friends Share 0 Manbar Singh answered this a.We have, Actual size = 12 cmDrawing size = 3 cmSo, 3 cm of drawing size represents 12 cm actual size.Let 1 cm of drawing size represents x cm of actual size.Now, 123 = x1⇒x = 4So, 1 cm of drawing size represents 4 cm actual size.Scale : 1 cm = 4 cm b.We have, Actual size = 45 feetDrawing size = 5 inchesSo, 5 inches of drawing size represents 45 feet actual size.Let 1 inch of drawing size represents x feet of actual size.Now, 455 = x1⇒x = 9So, 1 inch of drawing size represents 9 feet of actual size.Scale : 1 inch = 9 feet 1 View Full Answer Aarya Sharath answered this a) Actual size = 12 = 4 Drawing size 3 Hence, scale = 1cm = 4cm b) Actual size = 540 = 108 (1 foot = 12 inches, therefore, 45 feet = 540 inches) Drawing size 5 Hence, scale = 1cm = 108 inches 1 Prabhat answered this Scale = 1cm = 108 inches 1 Stuti Raj answered this i don't know 1