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The length of a rectangle is 3 cm more than its breadth. If the perimeter of the rectangle is 46 cm, find the length and the breadth.
Question
The length of a rectangle is 3 cm more than its breadth. If the perimeter of the
rectangle is 46 cm, find the length and the breadth.
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Mathematics
3 years
2021-08-14T03:54:32+00:00
2021-08-14T03:54:32+00:00 1 Answers
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Answers ( )
Answer:
breadth = 10 cm
length = 13 cm
Step-by-step explanation:
so,
perimeter = 46cm
2(l+b) = 46cm
or, 2(3+b+b) = 46cm ( because l = 3+b)
or, 2(3+2b) = 46cm
or, 6 + 4b = 46cm
or, 4b = 46cm – 6
or, 4b = 40cm
or, b = 40/4 cm
so, b = 10 cm
now,
l = 3cm + b
l = 3 cm + 10cm
= 13cm