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A circle with a radius of 4 in, is dilated by a scale factor of 5. What will be the circumference of the circle after dilation? 21 in 4 in 161 in 24 in
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A circle with a radius of 4 in, is dilated by a scale factor of 5. What will be the circumference of the circle after dilation?

21 in
4 in
161 in
24 in

User Bitemybyte
by
7.7k points

1 Answer

2 votes
Ok so circumference=2*pi*radius. So We know that the radius is dilated by a scale factor of 5, so we can put 2*pi*20. For pi you can use So when we multiply 2*pi*20, you get 125.6637
User Erskine
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