Question

length of a rectangular field is thrice its breadth if the perimeter of the field is 72 metre find its length and breadth​

Answer 1

Let breadth be x

Length is 3x

P=2(L+B)

=)72=2(x+3x)

=)72=2×4x

=)8x=72

=)x=9

Breadth=9 m

Length=27m

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Answer 2

Let the breadth = x

Then,

Length = 3x

Peri of the field = 2 (l+b)

72m = 2 (3x+x)

72m = 2 (4x). Multiple

72 = 8x

Therefore x = 72/8

x= 9

Length = 3(x) = 3(9) = 27m

Breadth = x = 9m

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