Question

equilateral triangle 15 centimetre height. what is the area of ∆

Answer 1

h=√3/2 × side,

15 =√3/2 × side,

then

side =30/√3,

side=10√3 cm,


therefore

Area of the equilateral triangle=√3/4 × side²,

=√3/4 × 10√3 × 10√3,

=75√3 cm²

Answer 2

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