What is the value of x in the figure given below if it is known that perimeter of triangle is 86 ?
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Solution

Concept : 1 Mark
Steps : 1 Mark
Result : 1 Mark

Since it is a triangle, perimeter of a triangle is equal to the sum of all the sides of the triangle.

So, $x + (x + 3) + 41 = 86$

$\Rightarrow 2 x + 44 = 86$

$\Rightarrow 2 x = 42$

$\Rightarrow x = 21$ .

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What is the value of x in the figure given below if it is known that perimeter of triangle is 86 ? [3 MARKS]

Concept : 1 Mark Steps : 1 Mark Result : 1 Mark Since it is a triangle, perimeter of a triangle is equal to the sum of all the sides of the triangle. So, x+(x+3)+41=86 ⇒2x+44=86 ⇒2x=42 ⇒x=21.

What is the value of x in the figure given below if it is known that perimeter of triangle is 86 ?
[3 MARKS]

Concept : 1 Mark
Steps : 1 Mark
Result : 1 Mark

Since it is a triangle, perimeter of a triangle is equal to the sum of all the sides of the triangle.

So, $x + (x + 3) + 41 = 86$

$\Rightarrow 2 x + 44 = 86$

$\Rightarrow 2 x = 42$

$\Rightarrow x = 21$ .