andrew80 andrew80
  • 16-02-2017
  • Mathematics
contestada

Number 13

Idk how to do number 13

Help appreciated

Number 13 Idk how to do number 13 Help appreciated class=

Respuesta :

wolf1728
wolf1728 wolf1728
  • 16-02-2017
sine (33) = BD / BC
BD = sine (33) * BC
BD = 0.54464 * 110
BD = 59.91

DC^2 = 110^2 - 59.91^2
DC^2 = 12,100 -3,589.21
DC^2 = 8,510.79
DC = 92.25

AD = BD = 59.91

AB^2 = 59.91^2 + 59.91^2
AB^2 = 7,178.42
AB = 84.73

Perimeter = AB + BC + AD + DC
Perimeter = 84.73 + 110 + 59.91 + 92.25
Perimeter = 346.89

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