Science

Math

Humanities

... and beyond

Socratic Meta
Featured Answers

Topics

Question #96a15

1 Answer

Mar 21, 2017

True for all radii, see this.

Explanation:

#(A_2)/(A_1) = 16/25#

# implies (pi r_2^2)/(pi r_1^2) = 16/25#

# implies ( r_2)/( r_1) = 4/5#

Related questions

See all questions in Circumference and Area of Circles

Impact of this question

1279 views around the world

You can reuse this answer
Creative Commons License