Determine the perimeter of a rectangle whose length is 12 cm and breadth is 8 cm.

A: 40 cm

B: 42 cm

C: 24 cm

D: 45 cm

Correct Answer : A

Using the perimeter of a rectangle formula, we can easily find the rectangle’s perimeter.

As we know,

Perimeter of rectangle = 2(length + breadth) units.

Given that, Length = 12 cm, and breadth = 8 cm.

Now, substitute the values in the perimeter formula, we get

Perimeter of rectangle = 2(12 + 8)

Perimeter = 2(12 + 8)

Perimeter = 2 × 20

Perimeter = 40 cm.

 

Therefore, the perimeter of the rectangle is 40 cm.

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