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

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

Can you find the 09 errors in the picture below?

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

What Word am I Looking For ?

10+10 and 11+11 can give you the same answer.

Explain how?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Jessica is telling her friends this story and asks them to guess if it’s the truth or a lie: “There was a man sitting in a house at night that had no lights on at all. There was no lamp, no candle, and no other source of light. Yet, he sat in the house and read his book happily.” Her friends say she’s lying, but Jessica corrects them and says she’s telling the truth. Jessica’s story is true—but how?

In the image below, can you find the value of an angle(y)

What does this rebus means ?

PROG WORKRESS