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An equilateral triangle has sides of 2 cm. What is its height?

Class 8Pythagoras TheoremGeometry

A $5 c m$
B2 cm
C $3 c m$
D1 cm

Step-by-Step Solution

The height cuts the base into 1 cm and 1 cm.

h^{2} = 2^{2} - 1^{2} = 3

, so

h = 3

cm (about 1.73).

Answer: C)

3 c m

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