Question

find the radius of a circle whose circumference is equal to the sum of the circumference of two circles with radii of 4 inches and 6 inches

Answer 1

Circumference of a circle=\(2\pi r\)
\(2\pi r=2\pi*4+2\pi*6\)
Can u find r nw @fangmitchell?

Answer 2

62.8?

Answer 3

answer=10

Answer 4

hmm no.
\(2\pi r=2\pi*4+2\pi*6\)
Factor out \(2\pi\) from the right habd side
\(2\pi r=2\pi(4+6)\)
\(2\pi r=2\pi(10)\)
Divide \(2\pi\) both sides.
\(r=10inches\)
Is it clear @fangmitchell?

Answer 5

*hand

Answer 6

oh yes i get it! thanks :)

Answer 7

yw:)