If side of a triangle is equal to the radius of circle having area of 154cm what is the area of equilateral triangle

Dear Student,

Given : Side of a triangle is equal to radius of a circle having area 154 cm2.To Calculate : Area of equilateral triangle with same side length.Solution : Area of circle = π r2154=227×r2r2=154×722r2=7×7r=7 cm= Side of triangleSo, Area of equilateral triangle=34(side)2Area of equilateral triangle=34(7)2=4934= 21.2176 cm2

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