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Sagot :
Answer: 63.63 m²
Explanation:
Area of circle:
- π(radius)²
Here given:
radius: (diameter/2) = (9/2) = 4.5 m
π should be taken as 3.142
So area of circle:
- 3.142(4.5)² = 63.6255 ≈ 63.63 (rounded to two decimal place)
Hi student, let me help you out! :)
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We are asked to find the area of this circle.
[tex]\triangle~\fbox{\bf{KEY:}}[/tex]
→ [tex]\bf{Area_{circle}=\pi r^{2}}[/tex]
Notice that we are asked to use 3.142 for [tex]\pi[/tex] (pi).
The radius isn't given to us; what we have instead is...the diameter.
To find the radius, we divide the diameter by 2.
[tex]\ddot\bigstar[/tex] Remember this...
[tex]\fbox{\bf{To\;find\;the\;radius,\;we\;divide\;the\;diameter\;by\;2}}[/tex]
Thus, the radius is
[tex]\bf{9\div2=4.5}[/tex]
Now substitute the values (3.142 for pi and 4.5 for r):
[tex]\bf{A=3.142\times4.5^{2} }[/tex]
Simplifying,
[tex]\bf{A=3.142\times20.25}[/tex]
Simplifying,
[tex]\bf{A=63.6255\:m}[/tex]
Rounding to 2 decimal places (D.P.):
[tex]\bf{A=63.63\:m}[/tex]
Hope it helps you out! :D
Ask in comments if any queries arise.
~Just a smiley person helping fellow students :)
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