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kari74 [83]
2 years ago
5

Find the area and the circumference of a circle with radius 3 cm.

Mathematics
1 answer:
pshichka [43]2 years ago
6 0

1. Observe problem

Solve for the area and Circumference of a circle who's radius is 3 cm

Area for circle formula:

pi*r^2=

9pi

I simplicity is needed, 9 pi is around

28.2743338823cm^2

Circumference for circle formula: 2*pi*r

which is

6pi

if simplicity is again needed, its around

18.8495559215cm

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Answer:

<h2>76</h2>

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>
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<h3>given:</h3>
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<h3>tips and formulas:</h3>
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<h3>let's solve:</h3>

according to the question

2x+2+2x+2+3x+1=180

solve:

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  2. substract 5 from both sides:=>7x+5-5=180-5=>7x=175
  3. divide both sides by 7: =>7x/7=175/7
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given:

M∠R=3x+1

substitute the value of x

3×25+1

75+1

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