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Question

The area of a/an_______ surface can be determined by a standard ________ and ________method.


A

regular

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B

formula, and measurement

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Solution

  1. The area of any regular surface can be calculated by two methods. The first one is by using the standard formula directly and the second one is the measurement method.
  2. For the formula method we use the formula directly to calculate the area
    For Example- The area of the right angle triangle=12×Base×Height
  3. For the measurement method we use graph paper. We place the regular surface on the graph paper and calculate how many squares are covered by the regular surface.

4. We know the area covered by each square on graph paper =1cm2
Given figure cover 25 squares

Therefore total area =25×1cm2 =25cm2 [ where n is the no. of square covered by the regular surface]

Hence, The area of a/an regular surface can be determined by a standard formula and measurement method.


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