Question

4.
Two circle having the same centre have radii
39m and 45m. What is the difference in their
circumference.​

Answer 1

Step-by-step explanation:

it is the answer of this question

Answer 2

Answer:

Difference in their  circumference is 12π m

Step-by-step explanation:

Radius of the first circle $r_{1}=39 m$

Radius of the first circle$r_{2}=45 m$

Circumference of circle is 2πr

Difference circumference of two circles is

$=2\pi r_{2}-2\pi \pie r_{1}\\=2\pi (r_{2}-r_{1})\\=2\pi (45-39)\\=2\pi (6)\\=12\pi m=37.7 m$

difference in their  circumference is 12π m