Question

The perimeter of a class room is 42 metre if the length of the class room is 12 metre find breadth of the class room and find the area​

Answer 1

Answer:

according to question :-

perimeter = 2(l+b)

so 42 = 2(12+b)

42 = 24+2b

42-24 = 2b

18 / 2 = b

9m = b

now area = l*b = 12*9 = 108m^2

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