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lado de triangulo equilatero = L
dato:
2* π * R + 3L = 60
Area de circunferencia = π * R²
area de triangulo equilatero = L² * (√3 / 4)
de la ecuacion 2*π*R+3L =60
R= (60-3L)/ (2π)
area total = π*R²+ L² * (√3 / 4)
= π((60-3L)/ (2π) )²+L²(√3/4)
=π(60-3L)²/(4π²)+L²(√3/4) *********** rpta