जॉइन Examsbookउत्तर : 1. "8% excess"
In measuring the sides of a rectangle, one side is taken 20% in excess and the other 10% in deficit. Find the error per cent in area calculated from the measurement ?5
प्र: In measuring the sides of a rectangle, one side is taken 20% in excess and the other 10% in deficit. Find the error per cent in area calculated from the measurement ?
- 18% excesstrue
- 29% deficitfalse
- 312% excessfalse
- 411% deficitfalse
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उत्तर : 1. "8% excess"
व्याख्या :
Answer: A) 8% excess Explanation: Since Area of Rectangle = side1 x side2Therefore, error% in area= x + y + xy100 %= [20 - 10 + ( -10 x 20)/100]% or 8% i.e. 8% excess.