Question

the height of a equilateral triangle is 10root3 cm its perimeter is?
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Answer 1

Answer:

60cm is the answer

Step-by-step explanation:

(10/¯3¯) ² + (x/2)² = x²

100*3 + x²/4 = x²

300x4 + x²/ 4 = x²

1200 + x² = 4x²

1200 = 3x²

x² = 1200/3

x²= 400

Therefore x is the square root of 400

So each side of the equilateral triangle is 20.

So perimeter would be 20 x 3 = 60 cm

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