britanyrice britanyrice

26-02-2019
Mathematics

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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=

Respuesta :

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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