# Question #a38ce

##### 2 Answers

#### Explanation:

To solve for

The problem is that it is the denominator!

There are two ways to fix this.

There is only one term on each side so we can do the following:

**Cross multiply to give** :

**Invert the whole formula** (1 term = 1 term, so it's OK)

See explanation.

#### Explanation:

Rearranging,

the universal 4-sd gravitational constant

the centers of the masses of which one (say

the bodies around.

If

Elucidation:

I have used data from

https://www.newscientist.com/article/dn24068-gravity-map-reveals-earths-extremes/

At Mount Nevado, Peru,

The mass

Here, #r_(12) = the radius from the center of the Earth to the point

under reference.

So, the radius of the Earth here

#=6389 km.

Similar approximations for Arctic surface gives the radius

to Arctic as

sqrt( ((6.674 X 10^(-20) X (5.972 X 10^(24)))/0.009834)# km

= 6366 km.