Time: T hour, 57 minutes, 02seconds Question Completton Statu Questione points The area of a triangle can be caleulated if you know the lengths of at three sides, uning the fullowing steps b. -...

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Extracted text: Time: T hour, 57 minutes, 02seconds Question Completton Statu Questione points The area of a triangle can be caleulated if you know the lengths of at three sides, uning the fullowing steps b. - Calculate s, which is half the perimeter of the triangle: - Then calculate the area as Write a java program that prompts the user to enter the lengths of the three sides: a, b, and c. then calculate the area of the triange. You should implement and uve the following methods - Method isValld takes 3 integers and returns true the values are valid for a triangle. The values are valid the sm of each two sides is larger than the remairing side. other words, ab has to be larger than e, and ae larger than b, and be larger than a) Method area takes 3 integers and returns the area of the triangle as described above. main method should prompt the user to enter three values. If the values are valid, calculate the area and output the resut. Otherwise, output an error mesage run anter 3 valuee: 10 15 20 The ares of the triangle ia 72.61843774138907 BUILD BUCCESSFUL (tetal time: 1 second) run: enter 3 valuee 10 15 30 The values you entered are Lnvalid BUILD SUCCESSFUL (total time: 1 second) T