Question

What is the key thing to NOT rounding your answers?
I need to make this answer in terms of Pi, and do it without decimals; I sent this picture to my math teacher and she said all of your answers are missing something very important. It is the key thing to not rounding your answer.

Answer 1

When asked to give an exact value solution this means not rounding values like π

for example the exact area of a circle with radius 4 units is.

area = πr² = π × 4² = 16π → ( exact solution)