Question

Astronomy
The radius of Earth is 6,378.1 km, which is 3,938.1 km greater than the radius of Mercury.
Find the radius of Mercury.
The radius of Mercury is
km.

Answer 1

Answer:

2440.

Step-by-step explanation:

If earth is a certain amount greater than the radius you are trying to find you would take earths measurements and take away what was said to be greater than mercury. Then after you do all the math you come up with mercurys radius measurements.

Answer 2

Answer:

Radius of Mars: 3,397 km

Step-by-step explanation:

6,378.1 - 2,981.1

= 6,000 + 300 + 70 + 8 + 1/10 - 2,000 - 900 - 80 - 1 - 1/10

= (6,000 - 2,000) + (300 - 900) + (70 - 80) + (8-1) + (1/10-1/10)

= 4,000 - 600 - 10 + 7 + 0

= 3,400 - 3

= 3,397

Answer:

Radius of Mars: 3,397 km