What part are: The length of the side of the square from its perimeter; second from hour; an angle

What part are: The length of the side of the square from its perimeter; second from hour; an angle, the degree measure of which is 15 °, from a right angle; angle, the degree measure of which is 20 °, from the flat angle.

1) The length of the side of the square, equal to a from its perimeter p = 4 * a, is: a / (4 * a) = 1/4 = 0.25.

2) 1 second from an hour is: 1 sec / 1 hour = 1 sec / 60 min = 1 sec / (60 * 60) sec = 1/3600th part.

3) An angle of 15 ° from an angle of 90 ° is (15 ° / 90 °) 1/6 part = 0.166 (6) – 6 in the period.

4) An angle equal to 20 ° from an angle equal to 180 ° is a value equal to (20 ° / 180 °) = 1/9 = 0.111 (1). Here (10 in brackets 1 in the period.