48m2
300 m^2
48m2
To find the distance around the circle, you must find the diameter, which is two times the radius. Then you multiply the length of the diameter by Pi. (Pi is a constant roughly equal to 3.14).
Comp = more roughly Super = most roughly
Roughly 10m
300 m^2
48m2
First, it is not an approximation but the formula for the exact value of the volume. Second, pi and e are quite different numbers.
Teaspoons are often approximated to 5 grams so roughly 5.
This theorem tells, roughly, that any mathematical system can be approximated by fuzzy logic. Hopefully this page http://sipi.usc.edu/~kosko/ helps more.
Titan
It roughly follows the meridian of 180° longitude.
Since Earth and Venus are roughly the same size AND have roughly the same mass, they have roughly the same gravity. The acceleration of gravity on the surface of Venus is 90.3% of what it is on Earth's surface.
Using your value of a, the answer is 4x3x7x7 square metres. More accurate to use the correct value of a, which is pi (ie nearer to 3.142) 588.2 m2
Greenwich
Water, roughly 70%.
Saturn's moon Titan.