Question

what is the breadth of a rectangle of perimeter 80 cm and length 30 cm​

Answer 1

Answer:

breadth = 10cm

Step-by-step explanation:

perimeter of rectangle=2(l+b)

80= 2(30+b)

80/2=30+b

40=30+b

40-30=b

10= b

Answer 2

Given:

• Perimeter of rectangle=80cm
• Lenght=30cm

To find:

• The breadth of the given rectangle

Solution:

Let the breadth of the rectangle be x

We know that,

⟾Perimeter of rectangle=2(l+b)

Putting the values,

↦80=2(30+x)

↦80=60+2x

↦80-60=2x

↦20=2x

↦x=20/2

↦x=10

Therefore,the breadth of the given rectangle is 10cm

And the lenght is 30cm

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Let's verify our answer!

Perimeter of rectangle=2(l+b)

Set down the values,

⟹80=2(30+10)

⟹80=60+20

⟹80=80

Thus, verified.

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