Seudónimo Seudónimo
  • 14-04-2015
  • Mathematics
contestada

What is the area of a circle with a radius of 9 cm? (Express your answer using π.)

A.
81π cm2

B.
18π cm2

C.
324π cm2

D.
9π cm2

Respuesta :

Nekoneko
Nekoneko Nekoneko
  • 14-04-2015
Area of a circle= π * r^2
π*9^2
π*81= 81π
Your answer is A.
Answer Link
iNeedHelpPleaseNow iNeedHelpPleaseNow
  • 14-04-2015
It is A because the area of a circle id πr^2 an 9*9=81 81
Answer Link

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