Area and perimeter of a rectangular field for 2000 square metre and 180 metre respectively find its length and breadth
Answers
Answered by
1
Answer:
l.b= 2000
2(l+b)=180 so, l+b = 90
l= 50 & b= 40
Answered by
1
Answer:
2(l+b)=180
L=180/2-b
L=90-b
lb =2000
(90-b)b=2000
b^2-90b+2000=0
b^2-50b-40b+2000=0
(b-50)(b-40)=0
b= 50 or 40
Then l = 2000/50
l= 40
i.e. L= 40 and B = 50
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