Question

find the perimeter of rectangle whose length and breadth 1. Length=2cm , breadth=4cm 2.Length=10cm , breadth=7cm 3.Length=10cm , breadth=5cm​

Answer 1

Answer:

1. 12cm
2. 34cm
3. 30cm

Step-by-step explanation:

At First,

Perimeter of a rectangle = 2(l+b)

So now,

1. length = 2cm ; breadth = 4cm

Therefore, perimeter of the rectangle

= 2(l+b)

= 2(2cm+4cm)

= 2×6cm

= 12cm

2. length = 10cm ; breadth = 7cm

Therefore, perimeter of the rectangle

= 2(l+b)

= 2(10cm+7cm)

= 2×17cm

= 34cm

3. length = 10cm ; breadth = 5 cm

Therefore, perimeter of the rectangle

= 2(l+b)

= 2(10cm+5cm)

= 2×15cm

= 30cm

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Answer 2

Given :

1. Length=2cm , breadth=4cm

2.Length=10cm , breadth=7cm

3.Length=10cm , breadth=5cm

To find :

• Perimeter of the rectangle =?

Step-by-step explanation :

1. Length=2cm , breadth=4cm

We know that :

Perimeter of the rectangle = 2 ( length + breadth)

Substituting the values in the above formula, we get,

= 2(2 + 4)

= 2(6)

= 12.

Therefore, Perimeter of the rectangle = 12 cm.

2.Length=10cm , breadth=7cm

We know that :

Perimeter of the rectangle = 2 ( length + breadth)

Substituting the values in the above formula, we get,

= 2(10 + 7)

= 2(17)

= 34.

Therefore, Perimeter of the rectangle = 34 cm.

3.Length=10cm , breadth=5cm

We know that :

Perimeter of the rectangle = 2 ( length + breadth)

Substituting the values in the above formula, we get,

= 2(10 + 5)

= 2(15)

= 30.

Therefore, Perimeter of the rectangle = 30 cm