Question

9. The perimeter of an envelope is 38 cm. If the breadth of the envelope is 5 cm, what is its
length?
cm
a sauare​

Answer 1

Step-by-step explanation:

Given,

Perimeter if envelop =38cm

and breadth. =5 cm

We know,

Here envelop is in rectangular shape

So,

Perimeter of rectangle =2(l+b)

2(l+5) =38

2l+10. =38

l =38-10/2

=28/2

=14

So, the length of envelop will be 14 cm

Answer 2

perimeter of rectangle = 38 cm

38= 2 (l + b)

breath is given

38 = 2l + 10

38-10 = 2l

28 = 2l

length = 14

Step-by-step explanation:

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