3.2 is 20 percent of what number?
1 answer:
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Answer:
Step-by-step explanation:
Given
--- big circle
--- area of small circle
Required
Probability that a point selected lands on the small circle
Calculate the area of the big circle using;
Where
So, we have:
This gives:
The probability that a point selected lands on the small circle is calculated by dividing the area of the small cicle by the big circle
This gives:
Simplify
Answer:
( 3 ) ( 7 ) − ( )
= 21 − ( )
=
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