Question

The length of a rectangle is 10 cm it's perimeter is 30 cm. Find its breath?
$please \: answer$
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Answer 1

Step-by-step explanation:

2×(l+b)= peri of rect

=》2 × (10 + b) = 30

we will first divide perimeter by 2 and the subtract it from 10 (in this case)...

30÷2=15

15-10= 5

=》 2× ( 10 + 5) = 30

final answer= 5 cm

you can also check it by :-

=》2×(10+5) = 30

=》2×(15)=30

=》30=30

hope you got it...

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Answer 2

Answer:

Breath is 5cm

Step-by-step explanation:

the perimeter of a rectangle is 2 (l+b)

given,

perimeter= 30

length(l) = 10

perimeter = 2 (l+b)

30= 2 (10+b)

$\frac{30}{2} = 10 + b$

15=10+b

b= 15-10

b= 5

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