Find the area of an equilateral triangle whose side is 12 cm.
| December 15, 2020 | education
a – side of the triangle
To find the area, we need to find the height first.
Let’s draw the height h. The side to which it was drawn will be divided by the height in half.
Having drawn the height, we got a right-angled triangle, where h is the leg.
h = √ (12 ^ 2 -6 ^ 2) = √108 = 6√3
S = a * h = 6√3 * 12 = 72√3
Answer: 72√3 cm ^ 2
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