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

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Why is the Hole below a Lock?

Can you find the missing piece of the Porsche?

What is the next shape from answers A, B, C, and D figure?

Client Dempsey living in one of the East Coast states of the U.S. was talking to Landon Donovan, who was living in the West Coast state of the U.S.

Dempsey: What time is it?
Donovan: Wow, It is the same time here.

How is this possible?

I am a word of 12 alphabets.

* Alphabets 12, 4, 7, 2, 5 : Eastern beast of burden
* Alphabets 1, 8, 10, 9 are street made famous by Sinclair Lewis.
* Alphabets 11, 3, 6 are past.

On whole it means a person suffering from delusions of greatness.

What Is it ?

A man was found murdered on Sunday morning. His wife immediately called the police. The police questioned the wife and staff and got these alibis: The Wife said she was sleeping. The Cook was cooking breakfast. The Gardener was picking vegetables. The Maid was getting the mail. The Butler was cleaning the closet. The police instantly arrested the murderer. Who did it and how did they know?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.