The circle below has a radius of 12 cm. What is the area of the shaded region? If necessary, round your answer to two decimal pl
2 answers:
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Given the equation:
You know that the radioactive substance has this half-life (in years)
And:
Therefore, you can rewrite the equation in this form in order to find "k":
Solve for "k":
Answer:
A
Step-by-step explanation:
You should know the area of a circle, A = πr².
So, all you need to find is the area of half a circle, or A = πr²
We see that the radius is half of the diameter or r = 6 in.
A = (3.14)(6)²
A = 56.52 in²