What’s 3 tenths - 1 half ?
1 answer:
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Answer:
4in = r
Step-by-step explanation:
Different problem if the x was a variable in the question
formula for area of circle = pi x r^2.
So if the area of a circle is 16 pi in^2, it would be an obvious estimate that the radius is the square root of 16 which is 4 inches.
If the x was a variable, you would find the square root of 16x which is which would make it 4
as the radius.
We start with
Assuming that we can cross multiply the equation:
You can recognize the perfect square pattern in the quadratic equation:
So, we have
Which is the only solution, with multiplicity 2.