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

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?

How many triangles can you find in this given picture?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

What does the below image rebus riddle means ?

Who has married many women but was never married?

Lady Gaga is pregnant and currently has 6 daughters

1. Dorry 2. Rebeka 3. Michael 4. Faniya 5. Sophia 6. Lavanya

What will she name her next child girl? (Think Logical)

A. Neema B. Tanya C. Tisha D. Jenniffer

The Little ant seems to be always confused. Do you know why?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?