In the real world you are not going to have a calculator on you 24/7. Nor will you have a pencil or paper to do longhand. You need to know how to accurately estimate your answers in order to be successful.
2, left direction (or negative if that’s an option)
I=Prt
700=(250)*r*(16)
700=4000*r
700/4000-(4000*r)/4000
0.175=r
17.5%=r
The simple interest rate is 17.5%
You first need to know the equation A=pi x r^2. The equation you need for this problem is pi (3.14) x 3^2
