britanyrice
britanyrice britanyrice
  • 26-02-2019
  • Mathematics
contestada

HELP ASAP!! Sorry if it’s hard to see. The second answer options are, 4.15, 2.33, 17.2

HELP ASAP Sorry if its hard to see The second answer options are 415 233 172 class=

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Ashraf82
Ashraf82 Ashraf82
  • 26-02-2019

Answer:

r = [tex]\sqrt{\frac{A}{\pi } }[/tex]

r = 17.2 cm

Step-by-step explanation:

∵ The area of the circle A = πr²

∴ r² = A/π

∴ r = √(A/π)

∵ A = 54 cm²

∵ π = 22/7

∴ r = √(54/(22/7)) = √(54×7/22) = 17.2 cm

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