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The side length of an equilateral triangle is 20 centimeters. Find the length of altitude of the triangle.

The side length of an equilateral triangle is 20 centimeters. Find the length of altitude of the triangle.
asked 75.8k views
5 votes
The side length of an equilateral triangle is 20 centimeters. Find the length of altitude of the triangle.

asked
User Reos
by
7.7k points

1 Answer

4 votes

Answer:

17.3 cm

Explanation:

20² = 10² + x²

400 = 100 + x²

300 = x²

x = 17.3 cm

answered
User Cyberbikepunk
by
8.7k points
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