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leva [86]
3 years ago
7

Find the circumference and area of a circle with a diameter of 22 inches. Leave your answers in terms of pi.

Mathematics
2 answers:
Cerrena [4.2K]3 years ago
5 0

Answer: d. C = 22π   ; A = 121π

Step-by-step explanation:

Circumference of a circle with diameter d is given by :-

C=\pi d

Given: Diameter of circle = 22 inches

Therefore, the circumference of circle is given by :-

C=\pi (22)=22\pi

Area of circle: A=\pi r^2, where r is radius of circle.

Since diameter = 22 inches, then radius = 11 inches   [Half of diameter]

Now, Area of circle: A=\pi (11)^2=121\pi

astra-53 [7]3 years ago
4 0
The circumference formula is 
C=Diameter x π=22 x π, the area formula is A=<span>π x R²
or R=</span><span>D/2=22/2=11

the answer is </span><span>d. C = 22π; A = 121π</span>
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Step-by-step explanation:

I have never done a problem like this, so this is my first time attempting it.

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(x-7)^2+(y+2)^2=11^2

The above expression is the equation of our circle in standard form. It is centered at the coordinates (7, -2) and has a radius of 11 units. The area of a circle if given by:

A=\pi r^2=121\pi

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