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2 years ago

A circle with center at (-2,2) passes through (7,2). Find the circumference and area of the circle in terms of .

Mathematics

1 answer:

Karolina [17]2 years ago

8 0

A=π(4.5)^2
A=<span>π(20.25)
A=63.585 units^2

C=</span><span>πd
C=(4.5)
C=14.13 units</span>

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According to the 2010 census The state with the fewest people is Wyoming with a population of 563,626. Write the number that is

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Answer:

573,626

Step-by-step explanation:

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2 years ago

A rectangular garden of area 208 square feet is to be surrounded on three sides by a brick wall costing $ 8 per foot and on one

vova2212 [387]

Answer:

Therefore the dimensions of the garden is 16 feet by 13 feet.

Step-by-step explanation:

Let the length of the garden be x and the width of the garden be y.

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Therefore,

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$\Rightarrow y = \frac{208}{x}$

Again given that,

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The perimeter of the rectangle is = 2(length+ breadth)

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To find the maximum or minimum point, we need to find out $\frac{dC}{dx}$ and set $\frac{dC}{dx}$ =0.

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Then

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$\Rightarrow \frac{2704}{x^2}=16$

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Again $\frac{d^2C}{dx}= \frac {8112}{x^3}$

$\therefore\left| \frac{d^2C}{dx}\right |_{x=13}= \frac {8112}{13^3}>0$

Therefore at x= 13 , the cost is minimum.

Therefore x = 13 feet.

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Therefore the dimensions of the garden is 16 feet by 13 feet.

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Answer:

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