What is the answer to p/3.7=5.1

Without any equipment, you can see stars that are 2{,}800{,}0002,800,0002, comma, 800, comma, 000 light-years away. by looking through a small telescope, you can see stars that are 3{,}112{,}000{,}0003,112,000,0003, comma, 112, comma, 000, comma, 000 light-years away. approximately how many times as far can you see using a small telescope as without any equipment?

Iknow the square root of 2 is irrational

The radius of the sphere is 10 units .what is the approximate volume of the sphere use π=3.14