THE LENGTH OF A RECTANGLE EXCEEDS ITS BREADTH BY 8CM IF LENGTH AND BREADTH INCREASE CM THE AREA OF THE NEW RECTANGLE WILL BE 162.SQ.CM MORE THAN THE GIVEN RECTANGLE FIND BREADTH OF THE GIVEN RECTANGLE
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Answer:
9.34 cm
Step-by-step explanation:
l=b+8
Area of this rectangle=lb=b(b+8)=b² + 8b
[∵ you have not mentioned by how much the new length & breadth has increased]
b² + 8b = 162
b² + 8b - 162=0
b=-4+ √178 ≈ 9.34 approx
CHECK
9.34(9.34+8) ≈ 162 sq cm
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