Explanation:
In this question
d is known as diameter
r is known as radius
c is known as circumference
pi is known as π
a is known as area
Now, In Maths
Area of circle = π×r×r
Circumference of circle = 2×π×r
Radius (r) = diameter(d)÷2
Given diameter is 6
then, r = 6 ÷2
r = 3
so, diameter = 6
radius = 3
circumference = 2×π×r
= 2×3.14×3 ( the value of π is equal to 3.14)
= 18.84
Area = π×r×r
= 3.14×3×3 ( the value of π is equal to 3.14)
= 28.26
The answer is true.
Explanation:
The scanner class's methods are the methods in java.util, which allows the user to read values of various types. If the nextLine is issued after a numeric read and the numeric value is at the end of the line, nextLine returns the empty string.
The problem occurs when you click the enter key which is a new line \n character. nextInt() has only the integer but skips the new line \n.
To solve this problem, you have to add the input.nextLine() after reading the int it will consume the \n.
Hence, make input.nextLine(); call after input.nextint(); which reads till end of life.
upfront price, but dependent on how long you use it you will save money, also the power it provides per square inch is low but that will be solved with time.
Answer:
6048 hours is required to guarantee access to the database
Explanation:
If a password contains 8 distinct digits, then there are P(10,8) permutations possible
P(10,8)=10! / (10-8)! = 10!/2! = 1814400
Since it takes 12 seconds to try one combination,
1814400×12 = 21772800 seconds is required to guarantee access to the database. This is 
