The dimensions of a courtyard were measured with a metre stick and hence its area was found to be 400sqare metre.Later on it was detected that the length of the metre stick actually measure 90cm and not one metre find the correct area of courtyard
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The correct area of the courtyard is 324 m².
Explanation:
The area of the courtyard was found to be= 400 square metres.
The actual size of the stick used was detected to be 90 cm (and not 1 meter) which equals 0.9 meters.
Therefore, the actual area to be measured in square meter = 0.9*0.9 = 0.81 square meters.
Therefore, the actual area of the courtyard = 400*0.81 = 324 square meters.
Thus the correct area of the courtyard is 324 square meters.
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