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

During a secret mission, an agent gave the following code to the higher authorities
AIM DUE OAT TIE MOD

However, the information is in one word only and the rest are fake. To assist the authorities in understanding better, he also sent them a clue, If I tell you any one character of the code, you can easily find out the number of vowels in the codeword.

Can you find out the code word?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

These types of puzzles are known as charades. What you have to do is find two words that are referred to in the first stanza and the second stanza and put them together to form the third word in the third stanza.

Just for example, if my first refers to 'off' and my second refers to 'ice', then my whole will be office.

My first is present - future's past -
A time in which your lot is cast.

My second is my first of space
Defining people's present place.

My whole describes a lack of site -
A place without length, breadth, or height.

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.