Math, asked by manthanasanani25, 5 months ago

the hight of an equilateral triangle is 9cm find
the area of a triangle ​

Answers

Answered by anuradha2sharma11
0

solution-:

Given -: height of equilateral triangle= 9cm

to find -: area of equilateral triangle = ?

Find -: we know height = √3/2(side)

√3/2(side)= 9

side = 9×2/√3

side = 18/√3 cm

Now, area of equilateral triangle = √3/4 (side)²

= √3/4×18×18/√3×√3

= √3/4×324/3

= √3/4×108

= √3×27

= 27√3 cm²

Hence, area of equilateral triangle is 27√3 cm².

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