# 4th year physics (earth)

1. Jun 20, 2013

### Furfox

Hello guys, I really need your help. I have a homework in physics, i know this questions is easy for others but i dont know how to solve this, i tried googling:(

So heres the question: ( i need solutions too)
1. If earths quadrant is 10 000 000m, what is the circumference of earth?
2. What is the radius of earth?
3. What is the diameter of earth?
4. What is the volume of the earth?

Pls respect my thread thank you very much in advance ! :D

2. Jun 20, 2013

### PeterO

Doesn't a quadrant refer to 1/4 of the way round the Earth?

3. Jun 20, 2013

### SteamKing

Staff Emeritus
Didn't you ever study basic geometry (circles, spheres, and all that)?

4. Jun 20, 2013

### haruspex

Yes. The original definition of the metre was that there were 10,000,000 of them to one quarter of Earth's circumference.

5. Jun 20, 2013

### 462chevelle

Age: 4.54 billion years

Distance from Sun: 92,960,000 miles (149,600,000 km)

Mass: 5.972E24 kg

Population: 6.974 billion (2011) World Bank

Moon: Moon

you should be able to get it off this information.

6. Jun 20, 2013

### 462chevelle

but if you took your quadrant number and mult. by 4 you would get the circ. then you could plug pi and your circ into the equation to get the radius. then get dia. then volume.

7. Jun 21, 2013

### Furfox

8. Jun 21, 2013

### SteamKing

Staff Emeritus
Didn't sound like it from the OP.

9. Jun 21, 2013

lol...