<prompt> At what age a childs height is expected to be 100 cm?2 years3 years4 years5 years  <response>: ANSWER: C 4 yearsREF: Essence of Paediatrics Prof. MR Khan 4th ed page 59, Clinical Pediatrics by D. N. Chatterjee page 18 A simple rough formula for calculation height from 2-14 years is:Height in inches 2.5 x age in years 30 Thus the expected height at 4 year of age 2.5 x 4 30 40 inches As 1 inch 2.5 cm, 40 inches 100 cm 