Question

8. Triangle ABC is an equilateral triangle. Find the perimeter if one side is given.​

Answer 1

Answer:

Step-by-step explanation:

Given, AC = 21.52 cm

Therefore, perimeter of the triangle

= 3× length of one side

= 3 × 21.52 cm

= 64.56 cm

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Answer 2

Concept:

An equilateral triangle is one with equally long sides on both sides. The three angles opposite the three equal sides are equal in size because the three sides are equal. As a result, with each angle measuring 60 degrees, it is sometimes referred to as an equiangular triangle.

Suppose, ABC is an equilateral triangle,;

AB = BC = AC, where AB, BC and AC are the sides of the equilateral triangle,

∠A = ∠B = ∠C = 60°

Area=√3/4 x side²

Given:

Triangle ABC is an equilateral triangle side =21.52cm

Find:

Find the perimeter if one side is given.​

Solution:

Given, AC = 21.52 cm

Therefore, perimeter of the triangle

= 3× length of one side

= 3 × 21.52 cm

= 64.56 cm

Therefore, the perimeter of the given equilateral triangle is 64.56cm

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