1.

The height of an equilateral triangle is 10 cm.its area is​

Answer»

Step-by-step EXPLANATION:

-->> Height of an equilateral Δ = ( √3 / 2 ) side

   => √3 / 2 * side = 10CM

   => 20√3 / 3 = side 

-->> AREA of equilateral Δ = √3/4 ( side )² = ( √3 / 4 )[ 400 * 3 ]/9 

                                                                    = 100( √3 / 3 ) cm² 

 



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