Why circular manhole is used over rectangular manhole

Easier to manufacture

Explanation:

Because there are no angles for alignment, the round shape makes these heavy covers easier to put back on once they're taken off. Round covers are also easier to manufacture. But the main reason manhole covers are round is so they won't accidentally fall into the manhole itself.

aliens are not real, the myth was created about 700 years ago because people found markings in the field of their crops. also, no there were no aliens on the moon.

hope this ! give brainliest!

the values of the selma marchers was to bring   their ability to vote into law. mlk was not hat march, which was protesting toward lbj