Seudónimo Seudónimo
  • 09-06-2017
  • Mathematics
contestada

how do I find the area of a circle when the circumference is 58 pie

how do I find the area of a circle when the circumference is 58 pie class=

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Pop55
Pop55 Pop55
  • 09-06-2017
C=2[tex] \pi[/tex]r
A=[tex] \pi[/tex]r²

C=2[tex] \pi[/tex]r=58[tex] \pi[/tex]
2r=58
r=29

A=[tex] \pi[/tex]r²
A=29²[tex] \pi[/tex]
A=841[tex] \pi[/tex]
Answer Link
Lieuvan119
Lieuvan119 Lieuvan119
  • 09-06-2017
C=πd
58π=πd
We conclude that
d=58 cm
r=1/2d
r=58(1/2)
r=29 cm
A=πr^2
A=29^2π
A=841π
Or
A≈2640.74 square cm. Hope it help!
Answer Link

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