Answer:
See below ↓↓↓
Step-by-step explanation:
a) 2 . 1 4 0 b) 2 9 . 9 9 c) 6 . 1 5 7
<u> + 1 . </u><u>7</u><u> 2 5 </u> <u>+ 1 . 4 2</u> <u>- 1 . 0 0 9</u>
3 . 8 6 5 3 1 . 4 1 5 . 1 4 8
its already in order
Circumference (C) = 2 π·r ; where r is the radius = diameter(d)/2
C = 2 π·(14/2)
=2 π·(7)
= 14π