Answer:
A = 8π cm²
Step-by-step explanation:
The area (A) of a circle is calculated as
A = πr² ( r is the radius )
Here diameter = 8 , then r = 8 ÷ 2 = 4
The area of half a circle is then
A = π × 4² =
× π × 16 = 8π cm²
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2 answers:
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a)
now, what's the highest profit they can make? check the picture below.
b)
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and you can use the same formula as above to get the x-coordinate for that vertex.
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a)
now, what's the highest profit they can make? check the picture below.
b)
well, if a tax is imposed on them, and say, they take it out of the revenue, then their new revenue is not 100x, is 90x, thus
and you can use the same formula as above to get the x-coordinate for that vertex.