Asked by Anonymous
Equilateral triangle has area of 9 times the square root of 3 inches. How many inches is perimeter?
Answers
Answered by
Reiny
let each side be x inches
Area = (1/2)(x)(x)sin60° = 9√3
(1/2)(x^2)√3/2 = 9√3
x^2 = 36
x = 6
perimeter = 3x = 18
Area = (1/2)(x)(x)sin60° = 9√3
(1/2)(x^2)√3/2 = 9√3
x^2 = 36
x = 6
perimeter = 3x = 18
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