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Sagot :
Answer:
- 43 cm
Step-by-step explanation:
Circumference formula:
- C = 2πr
Given:
- C = 86π
Find r:
- r = C/2π = 86π / 2π = 43 cm
- C=86[tex]\pi[/tex]
Now
ATQ
[tex]\\ \rm\Rrightarrow C=2\pi r[/tex]
[tex]\\ \rm\Rrightarrow 2\pi r=86\pi[/tex]
[tex]\\ \rm\Rrightarrow r=\dfrac{86\pi}{2\pi}[/tex]
[tex]\\ \rm\Rrightarrow r=\dfrac{86}{2}[/tex]
[tex]\\ \rm\Rrightarrow r=43cm[/tex]
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