Question

two side of triangle are 5 centimetre and force at the perimeter of the triangle is 12 cm find the length of its side​

Answer 1

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Answer 2

Correct Question :

• Two side of triangle are 5 centimetre and 4 the perimeter of the triangle is 12 cm find the length of its side.

Given :

• First Side of Triangle = 5cm
• Second Side of Triangle = 4cm
• Perimeter of Triangle = 12cm

To Find :

• The Third Side of the Triangle

Solution :

✰ As we know that, Perimeter of Triangle is given by Sum of all the sides of the Triangle. Now in this question, Two sides and Perimeter of the Triangle are given. So let's assume the third side be x cm. Now we will simply substitute the given values in the formula to find the third side of the Triangle.

⠀⠀⠀

⠀⠀⠀⟼⠀⠀Sum of all sides = 12

⠀⠀⠀⟼⠀⠀5 + 4 + x = 12

⠀⠀⠀⟼⠀⠀9 + x = 12

⠀⠀⠀⟼⠀⠀x = 12 - 9

⠀⠀⠀⟼⠀⠀x = 3cm

⠀

Thus Third Side of the Triangle is 3cm

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★ More about Triangles :

• A triangle has four vertices
• A triangle has three edges
• A triangle has three sides
• A triangle has three angles
• The sum of angle of a triangle is equal to 180⁰
• Perimeter of triangle = Sum of all sides
• Area of triangle = 1/2 × base × height
• Area of triangle (heron's formula) = √s(s - a) (s - b) (s - c)
• Semi perimeter of triangle = a+b+c/2
• Triangle is closed and 2D shape
• Equilateral triangle, scalene triangle and isosceles triangle are different types of triangles according to their sides
• Acute triangle, right triangle and obtuse triangle are different types of triangles according to their angles
• A triangle is also a polygon

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