Answer:
3643
Step-by-step explanation:
The units are always squared.
The area can be found when given the diameter by first finding the radius.
Circumference can be used to find area.
Answer: 17%
Step-by-step explanation:
I think they're saying your expenses for everything this month were $500, and of that $500 you spent $85 on clothing.
Let's represent the percentage spent on clothing as "
". Then
which means
(If you don't understand how I moved the 100, just think about it for a bit.)
So the answer is 
.
I think you're talking about the black spot on the surface of the Earth,
where the end of the Moon's shadow falls, and anybody inside that
circle sees the Sun completely covered for a few minutes.
The size of that spot varies. It depends on exactly how far the Moon
is from the Earth, and exactly how far both bodies are from the Sun.
The longest possible totality viewed from a single location is about
7-1/2 minutes, when all the geometry is just right. Then, I believe,
the black spot on the Earth's surface is something like 170 miles
across, moving at around 24 miles a minute, or 1,460 miles per hour.
