It was Carl O. Sauer who did
Salutations!
Describe the difference between revolution and a rotation, explain why each is important.
Revolution - Revolution is when the Earth revolves around the sun. This process takes 365 days/ 1 year.
Rotation - Rotation and revolution are both different. Rotation is when Earth is spinning on its own axis and also revolving around the sun. Rotation gives us day and night.
Why are they important?
Rotations gives us day and night which is 24 hours. Revolution gives us season. Earth's spins controls our live. We sleep at night and are awake in the days. Both of the spins are very vital to us.
Hope I helped (:
Have a great day!
18
Explanation:
B is the vertex angle of isosceles triangle. So AB = BC and base side is AC.
As AB = BC
So,
5
x
−
28
=
2
x
+
11
5
x
−
2
x
=
28
+
11
3
x
=
39
x
=
39
3
=
13
AC =
x
+
5
= 13 + 5 = 18
