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Chapter 6: Problem 10

Assume that \(r 1\) and \(r 2\) are variables that reference Rectangle objects, and the following statements are executed: r1.setLength(5.0); r2.setLength(10.0); r1.setWidth(20.0); r2.setWidth(15.0);

Short Answer

Expert verified
Answer: - Rectangle 1 (r1): Area = 100.0 square units, Perimeter = 50.0 units - Rectangle 2 (r2): Area = 150.0 square units, Perimeter = 50.0 units

Step by step solution

01

Initialize the Rectangles' dimensions

Firstly, let's set the dimensions for both rectangles: - Rectangle 1 (r1): Length = 5.0 units, Width = 20.0 units - Rectangle 2 (r2): Length = 10.0 units, Width = 15.0 units
02

Calculate the area of each Rectangle

The area of a rectangle is given by the formula \(Area = Length \times Width\). Therefore, the areas of r1 and r2 are: - Area of r1 = Length of r1 * Width of r1 = 5.0 * 20.0 = 100.0 square units - Area of r2 = Length of r2 * Width of r2 = 10.0 * 15.0 = 150.0 square units
03

Calculate the perimeter of each Rectangle

The perimeter of a rectangle is given by the formula \(Perimeter = 2 \times (Length + Width)\). Therefore, the perimeters of r1 and r2 are: - Perimeter of r1 = 2 * (Length of r1 + Width of r1) = 2 * (5.0 + 20.0) = 2 * 25 = 50.0 units - Perimeter of r2 = 2 * (Length of r2 + Width of r2) = 2 * (10.0 + 15.0) = 2 * 25 = 50.0 units
04

Outputs

As per the above calculations, the areas and perimeters of the given Rectangle objects are: - Rectangle 1 (r1): Area = 100.0 square units, Perimeter = 50.0 units - Rectangle 2 (r2): Area = 150.0 square units, Perimeter = 50.0 units

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Most popular questions from this chapter

Assume that the following is a constructor, which appears in a class: ClassAct(int number) { item = number; } a) What is the name of the class that this constructor appears in? b) Write a statement that creates an object from the class and passes the value 25 as an argument to the constructor.

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