Mathematics for IGCSE & O level - Using A Calculator (Section 3 - No. 32)

What is the key to use, if your calculator uses the $ \boxed{EXP} $ key?

$$x^2$$

$ \boxed{EE} $ key

$$ pi $$

$$ sqrt{} $$

If the calculator uses $ \boxed{EXP} $ key, you should use the $ \boxed{EE} $ key.