Circumference 16933

In the diamond ABCD, the angle BAD is 60°; the length of the diagonal BD is 7 cm. Calculate the circumference of the diamond.

Correct answer:

o =  28 cm

Step-by-step explanation:

u=7 cm BAD=60   AB = AD = BD  a=u=7 cm  o=4 a=4 7=28 cm

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