A farmer has a rectangular field with a perimeter of 120 meters. If the length is 40 meters what is the width of field?
ایک کسان کے پاس ایک مستطیل کھیت ہے جس کا دائرہ 120 میٹر ہے۔ اگر لمبائی 40 میٹر ہے تو میدان کی چوڑائی کیا ہے؟
Answer: 20 meters
Explanation
perimeter of rectangular field =(width+ length)*2
120=(40+l)*2
120/2=40+l
60=40+l
60-40=l
l=20
**ANOTHER SOLUTION***
P=2(l+w)
Solving for width
w=P
2﹣l=120
2﹣40=20m
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