Respuesta :

bhadelsimron19

Answer:

Step-by-step explanation:

area of a circle=πr^2

42=3.14*r^2

42/3.14=r^2

13.37=r^2

[tex]\sqrt{13.37[/tex]=r

3.65=r

3.7=r

therefore radius of a circle is 3.7 ft

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