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# Circles

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Daphne has a rope that is 60 meters long. She wants to use it to mark the boundary of a circle whose radius is an integer. What's the largest possible radius for her circle, in meters?

Mar 10, 2019

#2
+1

Daphne has a rope that is 60 meters long. She wants to use it to mark the boundary of a circle whose radius is an integer. What's the largest possible radius for her circle, in meters?

Boundary is another way of saying circumference.

Circumference = pi times diameter

60  =  3.14 x D

D  =  60/3.14  =  19.11

Truncating to an integer, the largest radius would be 9 meters

.

Mar 10, 2019

#2
+1

Daphne has a rope that is 60 meters long. She wants to use it to mark the boundary of a circle whose radius is an integer. What's the largest possible radius for her circle, in meters?

Boundary is another way of saying circumference.

Circumference = pi times diameter

60  =  3.14 x D

D  =  60/3.14  =  19.11

Truncating to an integer, the largest radius would be 9 meters

.

Guest Mar 10, 2019
#3
+2

Thanks

Mar 10, 2019