I need help, Gonna give brainliest to right answer

How many sides does a regular polygon have if each exterior angle measures 72a.3b.4c.5d.6

Pls me this is due today and i need i will make brainliest if you me answer correctly and i will report if you try to give me a dumb answer.

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?