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
Hi student, let me help you out! :)
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We are asked to find the area of the circle.
[tex]\triangle~\fbox{\bf{KEY:}}[/tex]
[tex]\dag~\mathtt{A=\pi r^2}[/tex]
Where:
A=Area
π=pi
r=radius (12 mm)
Have you noticed the [tex]~^2[/tex] next to r? This tells us to multiply the radius times itself.
So, we substitute the values:
[tex]\mathtt{A=\pi (12)^2}[/tex]
Square 12 first, then multiply:
[tex]\mathtt{A=144\pi }[/tex]
Upon simplifying,
[tex]\dag~\underline{\mathtt{A=452.16\:mm^2}}[/tex]
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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