What is the perimeter of an equilateral triangle whose altitude is 10 cm.
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height of an equilateral triangle = √3/2 * side
=) 10 = √3/2 * a
=) 10*2 / √3 = a
=) 20/√3 = a
=) 20√3/3 = a
=) perimeter = 3a
= 3×20×√3 / 3
= 20√3 cm.
=) 10 = √3/2 * a
=) 10*2 / √3 = a
=) 20/√3 = a
=) 20√3/3 = a
=) perimeter = 3a
= 3×20×√3 / 3
= 20√3 cm.
anita87:
can you please explain how 20/_/3=a be 20_/3/3=a
rationalizing concept
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