So the formula for the circumference of a circle is π x diameter
Since we know the the circumference already, we just divide that by π:
12π / π = 12
Now we halve the diameter to get the radius:
12 / 2 = 6
The area of a circle is π x radius²
So the area is:
·π x 6² = 36π· (or 113 not in terms of π)
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Step-by-step explanation:
AB = 3
by similaritiy criterion
CE/ CB= ED/AB
4/6= 2/AB
AB = 3
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Answer:
± 7
Step-by-step explanation:
Given
d =
, then
d = 7 or - 7, that is ± 7
Since 7 × 7 = 49 and - 7 × - 7 = 49