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

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.

What does this rebus mean?

O
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TIME

Can you find the missing piece of the Porsche?

A girl was sitting in her hotel room when she heard a knock on the door. She opened the door and found that a man was standing outside.
The man said, "Oh! I am really sorry, I thought this was my room."
He then walked through the corridor to the elevator. The girl did not know the man. She closed her door and called security asking them to apprehend the man.
What made her suspicious of that man? He might have been genuinely mistaken.

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

One night, a woman receives a call from the police. They tell her that her husband was murdered and that she should come to the crime scene as soon as possible. The woman drops the phone, shocked, and drives 20 minutes to the crime scene. As soon as she reaches the crime scene, the police arrest her and she is convicted of murder. How do the police know she committed the crime?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

A Child was born in Lahore, Pakistan.

Still child is not a Pakistani citizen.why ?