Question

If the perimeter of rectangle is 90 and its length is 40 what its breadth​

Answer 1

$\huge\mathcal\pink{ANSWER}$

Perimeter of rectangle = 90

$2(l + b) = 90$

$l + b = \frac{90}{2}$

$40 + b = 45$

$b = 45 - 40$

$b = 5$

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Answer 2

Answer:

hello buddy,

we have the formula for perimeter of rectangle as:2(l+b)

perimeter=90 units

applying the formula:

90=2(40+b)

45=40+b

45-40=b

b=5 units

all the best for your exams

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