Which among the following is the correct formula to calculate perimeter of the given figure?

2(a + b)

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(a + b)

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4(a + b)

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Solution

The correct option is A 2(a + b)
The given figure represents a rectangle.
In a rectangle, opposite sides are equal in length, so the perimeter is twice its width plus twice its height. Or as a formula:
Perimeter = 2(a + b)
where:
a is the width of the rectangle
b is the height of the rectangle

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