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

What seven-letter word has hundreds of letters in it?

1 dollar = 100 cent
= 10 cent x 10 cent
= 1/10 dollar x 1/10 dollar
= 1/100 dollar
= 1 cent

=> 1 dollar = 1 cent

solve this tricky problem?

There is a jar in which there are two types of candies.
20 blueberries and 16 strawberries. You perform the following steps:
1) You take out two candies.
2) If the two candies are of the same flavour, you add a blueberry one otherwise, you add the strawberry one.

You repeat these two steps till there is just one candy remaining in the jar. Which flavoured candy will be left?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

What do you answer even though it never asks you questions?

If 24H in a D => 24 hours in a day.
What does "64S on CB" stand for?

Name the three-letter word that can complete the below words:

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

I know a nine-letter word having only one vowel.
Do you ?

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?