Question

The radius of a circle is 12 mm what is the circles area

Answer 1

Answer:

Step-by-step explanation:

area of a circle = pi*r^2

pi = 3.14

r = 12 mm

area = 3.14 * (12)^2

area = 3.14 * 144mm

area = 452.16 mm^2 or 45.216 cm^2

Answer 2

Hi student, let me help you out! :)

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We are asked to find the area of the circle.

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• Use the formula:

$\dag~\mathtt{A=\pi r^2}$

Where:

A=Area

π=pi

r=radius (12 mm)

Have you noticed the $~^2$ next to r? This tells us to multiply the radius times itself.

So, we substitute the values:

$\mathtt{A=\pi (12)^2}$

Square 12 first, then multiply:

$\mathtt{A=144\pi }$

Upon simplifying,

$\dag~\underline{\mathtt{A=452.16\:mm^2}}$

Hope it helps you out! :D

Ask in comments if any queries arise.

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~Just a smiley person helping fellow students :)

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