Answer:
radius = 11
Step-by-step explanation:
The equation of a circle centred at the origin is
x² + y² = r² ( where r is the radius )
x² + y² = 121 ← is the equation of a circle centred at the origin
with r² = 121 , then
r = = 11
how many different ways can 4 tickets be selected from 50 tickets if each ticket wins a different prize
1 answer:
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