Print the requested details of a spherical cone to the screen.
Textbook: 2.4; 3.5
New concepts: operators (again), expressions;
Math methods and constants.
You will be calculating the dimensions of a spherical cone, which is essentially a cone with a spherical cap on its base (think of an ice cream cone).
Your program should start with two variables: a cone base radius (r) and a cone height (c). (Note that these are slightly different variables than those described in the linked resource).
Using these two variables, then calculate:
double variables (not
ints). For π, use the pre-defined Java constant
Math.PI. You may create additional variables as needed (such as for the slant height, which is needed in later calculations). However all output/results should change appropriately when only the initial values of the radius and height are changed.
Print out the radius and the result of each of the above calculations. Print one result per line. Be sure to label what each value is in your output. Thus, your output should be formatted something like this:
For a spherical cone with radius 3.0 and height 4.0: Slant height = 5.0 Volume = 52.35987755982988 Surface area = 78.53981633974483
When you're done: submit your code with the radius initialized to 10.0 and height to 24.0.
UsernameA02.java file to Tamarin.
The reason I'm having you make this change is just as a check for you to make sure that your output really relies only on the radius and height variables, and not on a few literals accidentally scattered here and there throughout your code. That's the whole point of a variable: change the value in the variable, and your program's behavior/output changes accordingly (hopefully correctly).
Math.PIand it will give you a very precise version of π. So, for example:
double circumference = 2 * Math.PI * radius;where
radiusis a variable you already declared and initialized before this line.
Math.sqrt(). So, to take the square root of 9, you could do something like this:
double answer = Math.sqrt(9);You could also replace the literal 9 with a variable or a longer expression.
Math.pow()function, such as in
int cubeVolume = Math.pow(side, 3). However, it's not really necessary for this assignment. You can just compute it "manually":
radius * radius.
System.out.println(1 / 3);prints out
0.3333333. So you want to use double (floating point) literals, rather than int (integer) literals here.