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a circular mirror has a diameter of 12 inches.what is the area, in square inches, of the mirror.

Sagot :

Eternal3fearidn
Area of a Circle = (pi)*(radius)*(radius)

radius = (diameter)/2 = 12 / 2 = 6

Area of this Circle = (pi)*(6)*(6) = 36 pi

Answer: 36 pi , 113.04 (if using 3.14 as pi) , or 113.01 (if using actual pi)

Answer:  The area of the mirror is 113.14 sq. inches [approx.].

Step-by-step explanation:  Given that a circular can till 375 ft² of land in 15 min.

We are to find the area of the mirror in square inches.

The AREA of a circle with radius 'r' units is given by

[tex]A=\pi r^2.[/tex]

The diameter of the circular mirror is 12 inches, so the radius of the mirror will be

[tex]r=\dfrac{12}{2}=6~\textup{inches}.[/tex]

Therefore, the area of the circular mirror is

[tex]A=\pi r^2=\frac{22}{7}\times 6^2=\dfrac{22\times 36}{7}=113.14~\textup{sq inches}~\textup{[approx.]}[/tex]

Thus, the area of the mirror is 113.14 sq. inches [approx.].

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