Using n = 3.14, find the area of a circle with a radius of 16.

Mathematics

1 answer:

KATRIN_1 [288]3 years ago

8 0

Answer:

803.84=A

Step-by-step explanation:

The area of a circle can be found by using the equation $\pi r^{2}$ =A.

$\pi r^{2}$ =A

$(3.14)(16^{2})$ =A

(3.14)(256)=A

803.84=A and the units are, how ever the radius is measured cubed

You might be interested in

Sketch the graph of the inequality<br> y-3x>-2

Mariana [72]

To graph y-3x>-2, find the boundary line. (y > -2 + 3x is your answer)

1. Find the equation of the boundary line.

y-3x>-2 is the equation.

2. Choose a point (x, y) on the shaded side on the line.

3. Plug x and y, in the boundary to identity the inequality sign.

7 0

3 years ago

The difference between a number and 12 is 20

Olenka [21]

X-12=20

Isolate x by adding 12 to both sides
x-12+12=20+12
x=32

Final answer: The number is 32.
Remember that difference is a keyword for subtraction.

8 0

3 years ago

trasher [3.6K]

$\displaystyle\bf\\Explanations:\\\\The~similarity~ratio~of~two~similar~cones=k\\\\k=is~the~ratio~between~2~corresponding~lengths\\\\k=\frac{R_1}{R_2}=\frac{h_1}{h_2}\\\\The~ratio~between~2~corresponding~areas~of~similar~cones=k^2\\\\\frac{Area~1}{Area~2}=k^2\\\\The~ratio~between~the~volumes~of~the~2~similar~cones=k^3\\\\\frac{Volume~1}{Volume~2}=k^3$

$\displaystyle\bf\\Solving:\\\\Volume1=108~m^3\\\\Volume2=4m^3\\\\k^3=\frac{108}{4}\\\\k^3=27~~\Big|\sqrt{~}\\\\k=\sqrt[\b3]{27}\\\\k=3\\\\Area1=54~m^2\\\\\frac{Area~1}{Area~2}=k^2\\\\\frac{54}{Area~2}=3^2\\\\\frac{54}{Area~2}=9\\\\Area2=\frac{54}{9}\\\\\boxed{\bf Area2=6 m^2}$