Question

If the perimeter of an equilateral triangle is 36 cm, calculate its area and height.
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Answer 1

Answer:

Perimeter =3x=36cm

x=12cm

In △ABD by pythagoras theorem

x2=(2x)2+AD2

AD2=43x2

AD=23x

height =23×12=63

area =21×base×height

21×x×23x

=43x2=43×(12)2

Area =363

Step-by-step explanation:

hope it helps you.