Question

The perimeter of a field is 300m and its length is 100m. What is its breadth?
P= (l + b)2
300=(100+b)2
300=100b X 2
300= 200b
300/200=b
Is this is correct.

Answer 1

300 = (100+b)2
now divide by 2:
150 = 100+b
now subtract 100
50 = b

You can always check your answer.

For your case,
100 + 300/200 = 100 + 1.5 = 101.5
2x101.5 is not 300

To continue with your proposed solution, correct the distribution of the 2.

300 = (100+b)2
300 = 100(2) + b(2)
300 = 200 + 2b
100 = 2b
50 = b

Answer 2

100 metre

Answer 3

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Answer 4

V good