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WAEC Agricultural Science 2012 Question 21

Question 21

Farm Surveying and Planning

The diagram below represents a chain measurement drawing of a school farmland surveyed by students who encountered an obstruction at point C. Use the diagram to answer questions 19–22.
The method used to calculate the distance CE is called

Diagram for this question
  1. A.chain method.
  2. B.right-angled method.
  3. C.similar triangle method.
  4. D.double perpendicular method.
Show the answer and explanation

Answer: B (right-angled method.)

Explanation

A right angle is set out at D and CE found as the hypotenuse.