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

Who are the happiest people in IPL match?

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?

A boy was locked in a room by some robbers. All that is in the room is a piano, a calendar, and a bed. The room is locked from the outside. What does he eat, drink, and how does he escape and get out?

A red house is made out of red bricks. A yellow house is made out of yellow bricks. And, a blue house is made out of blue bricks. So, what is a greenhouse made of?

What is the last thing you take off before bed?

Why is Saturday stronger than Monday?

If Japan and Panama decided to merge into a single country, probably people will name it Japanama.

Can you think of two more such country's unions that could produce similar names like Japanama by overlapping their three letters?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

In one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?