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aev [14]
2 years ago
15

A circular coaster has a diameter of 5 inches. What is its area? write your answer using π.

Mathematics
1 answer:
Verizon [17]2 years ago
4 0

Answer:

Step-by-step explanation:

Diameter=5 inches

Area= πr^{2}

<u>r is the radius of coaster.</u>

<u>Radius=diameter/2</u>

Substitute the value of D:

r=5/2

Now

Area=π \frac{5}{2} ^{2}

Area=π(\frac{25}{2})

Area=12.5π sq.inches

<h3><u>If you need to ask any questions, please let me know.</u></h3>
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Answer:

\boxed{\dfrac{f(a+h)-f(a)}{h}=-3a^2-3ah-h^2}

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f(x)=-x^3+2\\\\\dfrac{f(a+h)-f(a)}{h}\\\\f(a+h)\to\text{substitute x = a + h}\\f(a)\to\text{substitute x = a}\\\\\dfrac{f(a+h)-f(a)}{h}=\dfrac{-(a+h)^3+2-(-a^3+2)}{h}\\\\\text{use}\ (x+y)^3=x^3+3x^2y+3xy^2+y^3\\\\=\dfrac{-(a^3+3a^2h+3ah^2+h^3)+2-(-a^3)-2}{h}\\\\=\dfrac{-a^3-3a^2h-3ah^2-h^3+2+a^3-2}{h}\\\\\text{combine like terms}

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