## DMOPC '14 Contest 5 P1 - Core Drill

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Points: 3 (partial)
Time limit: 2.0s
Memory limit: 64M

Author:
Problem type

Simon got a new drill recently. Everyone knows that a drill is shaped like a right circular cone. Simon knows his drill has radius and height . But now he wants to calculate the volume. Write a program to help Simon!

#### Input Specification

The first line of input will have an integer .

The second line of input will have an integer .

#### Output Specification

The first line of output should have the volume of Simon's drill. The output will be accepted if it's within an absolute or relative error of .

#### Sample Input

3
5

#### Sample Output

47.12

#### Hint

is the volume of the right circular cone with radius and height .

• commented on April 24, 2024, 5:58 p.m.

Apparently you don't need to round to two digits?

• commented on Feb. 28, 2024, 1:59 p.m.

this one was difficult :(

• commented on Jan. 7, 2024, 10:31 a.m.

I tried that pi must be 22/7in py3

• commented on Dec. 31, 2023, 12:32 p.m.

Apparently and both work as approximations of pi...

• commented on Dec. 31, 2023, 4:41 a.m.

#### define pi acos(-1)

if you have problems with this value

• commented on Jan. 9, 2022, 9:23 p.m.

Don’t worry about decimals numbers in PI

PI = 3.141592653589793 & PI = 3.14 - Worked Fine

• commented on Sept. 22, 2021, 6:06 p.m.

You need to use the iomanip library if working in C++. Using 3.14 as pi is fine, just make sure to declare the variables in the order they appear otherwise DMOJ might interpret it as incorrect.

• commented on July 4, 2020, 3:27 a.m.

What is the value of π? I know it is 3.14159...

but will i round it off to 3.14?

• commented on July 4, 2020, 4:06 p.m. edit 3

If you read the output specification, it says in what cases your output will be accepted. In this case, it is fine to use 3.14 as π. If you have more questions, it would be easier to join the DMOJ Discord to get faster responses instead of commenting on each problem.