All categories

2 years ago

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:

$144 \times \pi = 452.38$

You might be interested in

HELP PLEASE 80 POINTS

alexgriva [62]

Answer:

x = 15/p
x = -3

Step-by-step explanation:

<h3>Given</h3>

4(px + 1)=64

Solve for x
Find x when p = -5

<h3>Solution</h3>

4(px + 1) = 64
4(px + 1)/4 = 64/4
px + 1 = 16
px = 15
x = 15/p

<u>When p = -5, substitute p:</u>

x = 15/p
x = 15/(-5) = -3

4 0

3 years ago

Read 2 more answers

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:

Based on the diagram attached, the area which the available fencing can enclose will measure X x Y feet. As the total length of fencing available is 220 feet, the fenced perimeter must equal 220 feet

$Y + 2X = 220$

$Y = 220 - 2X$

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:

$f(a) = a^{b}$