Diamond PQOR

In the diamond PQOR, the diagonal RQ is 4 cm long and the angle RPQ is 60°. What is the circumference of this diamond?

Correct answer:

o =  16 cm

Step-by-step explanation:

RQ=4 cm RPQ=60   ROP=RPQ=60=60  PRO=180RPQ=18060=120  PRQ=PRO/2=120/2=60   ΔRQP=60°60°60°  RP=RQ=4 cm PQ=RP=4 cm  o=4 PQ=4 4=16 cm

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