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

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

Find the hidden panda in the image below.

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

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

If,

A = 1

B = 2

C = 3

...

...

Z = 26.

Based on above rule, you need to find an eleven letter word whose letter sum is equal to 52.

what does the below rebus mean?

A man wants to cross the pit of fire which is 25 feet in length and he has 2 planks(fire resistant) 19 feet in length. How can he cross the pit of fire alive?

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?