Question

find the area of an equilateral triangle if length of each of its sides is 12cm.​

Answer 1

★ Solution :-

Given ,

• Side of triangle = 2cm
• Type of triangle = Equilateral triangle

We need to find ,

• Area of Equilateral triangle = ?

As we know that

Area of Equilateral triangle = √3/4 a²

Where , a is the side of ∆

Substituting a = 12 cm

→ √3/4 ( 12 )²

→ √3/4 ( 12 ) ( 12 )

→ √3 (3) ( 12)

→ 36√3 cm²

Hence , area of Equilateral triangle whose side is 12 cm is 36√3 cm²

Answer 2

Given :   an equilateral triangle of each side 12 cm

To Find : area of   equilateral triangle

Solution:

an equilateral triangle - Triangle with all Equal sides :

Area  an equilateral triangle = (√3 / 4) side²

side = 12 cm

Area  an equilateral triangle = (√3 / 4) 12²

= 36√3 cm²

= 36 * 1.732

=  62.352 cm²

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