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jeka94
2 years ago
14

What is the area of a circle with a radius of 12 feet?

Mathematics
2 answers:
kvasek [131]2 years ago
5 0

Answer:

144π ft² or approximately 452.16 ft²

Step-by-step explanation:

The area of a circle is \pi r^2, where r = radius. We're given the radius as 12 feet. For pi, we can solve area in terms of pi or approximate pi to 3.14.

Approximation of Pi:

  • 3.14 *12^2
  • 3.14*144
  • 452.16
  • 452.16 ft²

In terms of Pi:

  • \pi *12^2
  • \pi *144
  • 144\pi
  • 144π ft²
Margarita [4]2 years ago
3 0

Answer:

144 \times \pi = 452.38

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alexgriva [62]

Answer:

  • x = 15/p
  • x = -3

Step-by-step explanation:

<h3>Given</h3>
  • 4(px + 1)=64
<h3>Find</h3>
  • Solve for x
  • Find x when p = -5
<h3>Solution</h3>
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4 0
3 years ago
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A developer wants to enclose a rectangular grassy lot that borders a city street for parking. If the developer has 220 feet of f
MrRa [10]

Answer:

6050 square feet

Step-by-step explanation:

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Y + 2X = 220

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Area of a rectangle is determined by multiplying the length of perpendicular sides:

Area = X*Y

Area = X(220 - 2X)

Area = 220X - 2X^{2}

The derivative of an equation determines the slope at any given point of that equation. At the maximum or minimum point of the equation, the slope will be zero. Therefore, differentiating the equation for area and equating it to zero will give the value of X where the area is maximum.

A simple variable can be differentiated using below concept:

f(a) = a^{b}

f'(a) = ba^{b-1}

Using the above concepts to differentiate Area and calculate X will give:

Area = 220X - 2X^{2}

Area' = 220 - 4X = 0

X = 55

Calculating Y:

Y = 220 - 2X

Y = 220 - 2(55)

Y = 110

Calculating Area:

Area = X*Y

Area = 55*110

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3 years ago
Day 6: Textbook Page 321 Problem 9 When Esteban looks at the puddle, he sees a reflection of the top of the cactus. How tall is
Novay_Z [31]

The given figure can be drawn as,

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6 0
1 year ago
On a test that has a normal distribution, a score of 32 falls three standard
lions [1.4K]

Answer:

Mean = 62

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X = mean ± sd

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32 = mean - 3sd ___(2)

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3 years ago
I = prt
hodyreva [135]

Answer:

The amount  we need to invest is 500 muggle money.

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Principle amount that we need to invest = P

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800=0.6P+P

800=1.6P

P = \frac{800}{1.6}=500

The amount  we need to invest is 500 muggle money.

7 0
3 years ago
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