The length of a rectangle is 3 times its breadth. If the perimeter is 84 m, find the length of the rec tangle
Answers
Answered by
2
84 = 2(l+b)
84 = 2( l + l/3)
42 = 4l/3
l = 126/4
l = 31.5 m
84 = 2( l + l/3)
42 = 4l/3
l = 126/4
l = 31.5 m
Answered by
6
Answer:
Let the breadth of the rectangle be x
Then
Length = 3x
Now,
2 ( 3x + x ) = 84
4x = 42
x = 42 / 4
x = 21 / 2
Hence breadth is 21/2m
Length = 3 × 21 / 2 = 63/2m
Thanks! ❤
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