Answer:
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Step-by-step explanation:
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The answer is 4
you just subtract 3 from 7
Answer:cube root 381.7
Then half it too find the radius.
Step-by-step explanation:
Angle x is the same as the angle opposite it so 63 degrees
angle y = 180 - 72 - 63 = 45 degrees
angle z is the same angle shown at point B so 72 degrees