94/120=0.7833333333333333......
he spented 78.3333333333333....% of what he estimated
<u>We are given</u>
- Radius of Earth; 6.4 x 100 meters = 640 meters
Clearly, the shape of the earth is a sphere. Thus, to determine the volume of the earth, we will use a formula that determines the volume of a sphere.

When we substitute the radius in the formula, we get;


Take π as 3.14


Simplify the numerator;


Divide the numerator by 3;


Divide both sides by 2 Since 2 Is multiplying P.
2P-12=p
/ /
2 2
P=6