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Algebraic Expressions in Perimeter Formulae

A triangle is...

Question

A triangle is shown in the figure below, x and y represent the length of sides.
The perimeter of the triangle is

2x + y

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x + 2y

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x + y

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2x - y

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Solution

The correct option is A 2x + y
The perimeter of a triangle is the sum of lengths of its three sides.

So, perimeter of the given triangle is x + x + y = 2x + y.

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Question 15

The perimeter of the triangle shown in the figure below is:

(a) 2x + y

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Question 15

The perimeter of the triangle shown in the figure below is:

(a) 2x + y

(b) x + 2y

(d) 2x - y

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2 x - 3 y + 1, x + y - 1

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2 (x + y)^{2} - 6 (x + y)

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