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

what does this picture(rebus) riddle means ?

A man walked into a pub and went straight towards the Barman. He asked for a dirty martini from the Barman. The Barman thought something and then pulled out a pistol from his drawer and aimed it directly at the man. Why did he do that?

Imagine you are in a room with no windows or doors. How will you get out?

What can you see in the middle of March and April that you can never see in any other month?

How can you make a TV, a bed, a dog, and a car liquid?

A bank customer had $100 in his account. He then made 6 withdrawals. He kept a record of these withdrawals, and the balance remaining in the account, as follows:

Withdrawals Balance left
$50 $50
$25 $25
$10 $15
$8 $7
$5 $2
$2 $0
----- -----
$100 $99

Why are the Totals not tallying?

When is the top of a mountain similar to a savings account?

How is a fly different from a mosquito?

What is the last thing you take off before bed?