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2 answers:
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Answer:
Step-by-step explanation:
Remember that
Area of Circle =
They told us that for this circle, the area is
If you put it back into the formula for area of a circle we get:
Area of Circle =
Divide both sides by .
144 =
Now we want to solve for r (r = radius).
You need to square root each side
So now we know the radius, metres
Also remember that
Diameter =
So,
Diameter = 2 times 12 = 24 metres
Answer:
.
Step-by-step explanation:
For function , the notation
means that when the input to the function is
, the output would be
.
The inverse function of a one-to-one function is commonly denoted as
.
The inverse function undoes the action of the original function. In this question, maps
to
. Thus,
would need to map
back to
. Therefore,
should be the corresponding input and output values.