Question

Please help me I will give you brainliest

Answer 1

When you put your 2 rounded ends together you get a perfect circle so let's find the circumference around that circle first.  $C= \pi d$ which of course gives us a circumference of $140 \pi$.  Now add in 300 + 300 to get 600+140pi, and when you multiply 400 times pi and add in the 600 you get 1039.8, which is your 1040 above.

Answer 2

The answer is 1039.82 or 1040 if u round up