If the area of ΔPQR above is 12√3 cm2, find the value of q?

  • A 6 cm
  • B 7 cm
  • C 8 cm
  • D 5 cm
jamb 2010mathematics

The correct answer is A. 6 cm

Area of a triangle = 1/2 ab Sinθ

12√3 = 1/2 x 8 x q sin 60

12√3 = 4 x q x √3/2

12√3 = 2q√3

q = 6

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