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Design a "Shape" class and inherit from it to create classes like "Circle," "Rectangle," and "Triangle," each with methods to calculate area and perimeter.

Nazmul Anik answered on September 6, 2023 Popularity 1/10 Helpfulness 1/10

answer Design a "Shape" class and inherit from it to create classes like "Circle," "Rectangle," and "Triangle," each with methods to calculate area and perimeter.

Design a "Shape" class and inherit from it to create classes like "Circle," "Rectangle," and "Triangle," each with methods to calculate area and perimeter.

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class Shape {
    // Placeholder methods for area and perimeter
    public function calculateArea() {
        return 0;
    }

    public function calculatePerimeter() {
        return 0;
    }
}

class Circle extends Shape {
    private $radius;

    public function __construct($radius) {
        $this->radius = $radius;
    }

    public function calculateArea() {
        return pi() * pow($this->radius, 2);
    }

    public function calculatePerimeter() {
        return 2 * pi() * $this->radius;
    }
}

class Rectangle extends Shape {
    private $length;
    private $width;

    public function __construct($length, $width) {
        $this->length = $length;
        $this->width = $width;
    }

    public function calculateArea() {
        return $this->length * $this->width;
    }

    public function calculatePerimeter() {
        return 2 * ($this->length + $this->width);
    }
}

class Triangle extends Shape {
    private $side1;
    private $side2;
    private $side3;

    public function __construct($side1, $side2, $side3) {
        $this->side1 = $side1;
        $this->side2 = $side2;
        $this->side3 = $side3;
    }

    public function calculateArea() {
        // Using Heron's formula to calculate the area of a triangle
        $s = ($this->side1 + $this->side2 + $this->side3) / 2;
        return sqrt($s * ($s - $this->side1) * ($s - $this->side2) * ($s - $this->side3));
    }

    public function calculatePerimeter() {
        return $this->side1 + $this->side2 + $this->side3;
    }
}

// Example usage
$circle = new Circle(5);
echo "Circle Area: " . $circle->calculateArea() . "\n";
echo "Circle Perimeter: " . $circle->calculatePerimeter() . "\n";

$rectangle = new Rectangle(4, 6);
echo "Rectangle Area: " . $rectangle->calculateArea() . "\n";
echo "Rectangle Perimeter: " . $rectangle->calculatePerimeter() . "\n";

$triangle = new Triangle(3, 4, 5);
echo "Triangle Area: " . $triangle->calculateArea() . "\n";
echo "Triangle Perimeter: " . $triangle->calculatePerimeter() . "\n";

Popularity 1/10 Helpfulness 1/10 Language php

Source: chat.openai.com

Tags: area class each methods php

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Contributed on Sep 06 2023

Nazmul Anik

0 Answers Avg Quality 2/10

Design a "Shape" class and inherit from it to create classes like "Circle," "Rectangle," and "Triangle," each with methods to calculate area and perimeter.

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Design a "Shape" class and inherit from it to create classes like "Circle," "Rectangle," and "Triangle," each with methods to calculate area and perimeter.

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