If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

A father is locked up in jail. His wife has gone bankrupt. Their male child has to sell his hotel in order to gain some money. Yet their girl child does not care and is quite happy.

How can someone be so rude?

What part of the chicken has the most feathers?

I am sure no one can have two things for dinner. what are they?

As shown in the picture below, we can see a boy hanging on the tree branch to save his life. There are various ways in which he can die like1. A snake hanging toward the right waiting to bite the boy.2. A roaring Lion near the tree.3. Two crocodiles are ready to attack if the boy reaches near water. The tree is chopped to some extent, so can fall as if he moves a lot. Can you give this boy an escape plan?

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Prove that the below maths equation is true.

8 + 8 = 91