Question

Find the perimeter of triangle​

Answer 1

Answer:

21 is a perimeter of a triangle please mark me Branlyist

Answer 2

Question :

Find the perimeter of triangle whose dimensions are :

• AB = 9 units
• BC = 7 units
• AC = 10/2 units

Required Answer :

The perimeter of triangle = 21 units

Given :

We are given the dimensions of a triangle :-

• AB = 9 units
• BC = 7 units
• AC = 10/2 units

To find :

• The perimeter of the triangle

Solution :

Perimeter is the sum of all sides.

Formula to calculate the perimeter of triangle :

• Perimeter = a + b + c

where,

• a denotes the first side
• b denotes the second side
• c denotes the third side

Substituting the given values :

⇒ Perimeter of triangle = 9 + 7 + 10/2

⇒ Perimeter of triangle = 9 + 7 + 5

⇒ Perimeter of triangle = 21

Therefore,

• The perimeter of triangle = 21 units

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Knowledge Bytes :

• Area of isosceles triangle = ½ × b × h
• Semi perimeter = Perimeter ÷ 2
• Heron's formula = √s(s - a)(s - b)(s - c)
• Area of equilareral triangle = √3/4 a

where,

• s denotes the semi perimeter
• a denotes the side of the triangle
• b denotes the base
• h denotes the height