Q1) Write a program that asks the user to enter an item’s

Q1) Write a program that asks the user to enter an item’s wholesale cost and its markup percentage. It should then display the item’s retail price. For example: If an item’s wholesale cost is 5.00 and its markup percentage is 100 percent, then the item’s retail price is 10.00If an item’s wholesale cost is 5.00 and its markup percentage is 50 percent, then the item’s retail price is 7.50 The program should have a method named calculateRetail that receives the wholesale cost and the markup percentage as arguments, and returns the retail price of the item. Q2) Write a program that asks the user to enter the width and length of a rectangle, and then display the rectangle’s area. The program should call the following methods: getLength – This method should ask the user to enter the rectangle’s length, and then return that value as a double.getWidth – This method should ask the user to enter the rectangle’s width, and then return that value as a double.getArea – This method should accept the rectangle’s length and width as arguments, and return the rectangle’s area. The area is calculated by multiplying the length by width.displayArea – This method should accept the rectangle’s length, width, and area as arguments, and display them in an appropriate message to the screen. Q3) In physics, an object that is in motion is said to have kinetic energy. The following formula can be used to determine a moving object’s kinetic energy: KE = ½ mv2 The variables in the formula are as follows: KE is the kinetic energy, m is the object’s mass in kilograms, and v is the object’s velocity, in meters per second. Write a method named kineticEnergy that accepts an object’s mass (in kilograms) and velocity (in meters per second) as arguments. The method should return the amount of kinetic energy that the object has. Demonstrate the method by calling it in a program that asks the user to enter values for mass and velocity.

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