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Question from Amanda, a parent:
what is the area of a circle with a circumference of 3000 metres?
Amanda,
The area of a circle is given by the formula A = π r2, where A is the area and r is the radius. The circumference of a circle is C = 2 π r.
If we "solve for r" in the second equation, we have r = C / (2 π ). Now we use this to replace r in the first equation: A = π [ C / (2 π ) ]2.
When we simplify this, we get A = C2 / (4 π).
Now you can put your value of C into this equation and find A. Remember, π is about 3.1416.
240÷6=40 so the answer would be "The train is traveling 40 miles per hour."
A is the correct answer coz if you substitute 22 in the place of X-5 the answer will be 17
Answer:
67.50
Step-by-step explanation:
100%-> 450
15%-> 67.50
