Question

28. The perimeter of a rectangular field is 82 m and it's area is 400 m².
Find the breadth of the rectangle,
dove less than the time taken by 'R' to finish onions of​

Answer 1

Answer:

2(l+b)=82m

(l+b)=41m

l=41-b

l×b=400

(41-b)×b=400

41b-b^2=400

b^2-41b+400=0

solve above quadratic eq.you will get,

breadth=16m and length=25m

Answer 2

Step-by-step explanation:

☆CORRECT QUESTION~

. The perimeter of a rectangular field is 82 m and it's area is 400 m².

Find the breadth of the rectangle,

☆ANSWER

l×b=400cm²

2(l+b)=82

2l=82-2b

l= 82-2b/2=41-b

Substitution

b=400/(41-b)

41-b²=400

b²=400-41

b=18.9472953215cm

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