1st step is to find the radius, then substitute into the formula for area of a circle

to find the radius, just halve the diameter
Honestly, the most intelligent solution would be to light the candle first, since it has a longer duration and then I can light the lamp, and then I can light the newspaper. Then, I will use the newspaper to light the fire.
Answer:
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Step-by-step explanation:

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It is decreasing, since the y-value is going down.