Question

Find the exact circumference of the circle.

http://media.education2020.com/evresources/647-11-01-00-00_files/i0130000.jpg

Answer 1

first you got to find the missing side of the triangle which once found is the diameter of the circle.

so to find the missing side you have to use the equation a^2+b^2=c^2.
you plug in the sides they give you which is 12 and 5. and the equation is then:
12^2+5^2=c^2
solve that to get C. C will be the diameter of the Circle.

once you have found C or also the diameter in this case, then you use the circumference equation:
C=D*Pi
D being the Diameter

hope that helps

Answer 2

okay so then i added 144 +25=169. then i do the square root of 169 and thas the answer right?

Answer 3

yes so far so good :) you find the square root of 169 and then continue.

Answer 4

thanks

Answer 5

your welcome :) hope you understand the rest :)

Answer 6

yes i do :) that was good