i have ni idea!! haha!
how is petrol used in our everday life
It usually isn't. Scientific notation is used for very large and very small numbers, that are not normally used in your daily life. Unless your "daily life" involves work in science or engineering.
alum....it is a white double salt used for sedimentation of muddy water....
I use the Golden Ratio in my daily life to design websites.
These nuts
You pet them
Sunblock.
In dentistry .
in alternators
They are used in airplanes and in sailboats.
zero is used badly
decimals are a part of our daily life because they are used to separate dollars from cents.