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

a. C = 11π; A = 44π
b. C = 22π; A = 44π
c. C = 11π; A = 121π
d. C = 22π; A = 121π

Respuesta :

Nirina7
the circumference formula is 
C=Diameter x π=22 x π, the area formula is A=π x R²
or R=D/2=22/2=11

the answer is d. C = 22π; A = 121π
JeanaShupp

Answer: d. C = 22π   ; A = 121π

Step-by-step explanation:

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

[tex]C=\pi d[/tex]

Given: Diameter of circle = 22 inches

Therefore, the circumference of circle is given by :-

[tex]C=\pi (22)=22\pi[/tex]

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

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

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

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