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Assignment 3 solution 2021

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Solution:
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CS201 ASSIGNMENT 3 SOLUTION SPRING 2021

#include <iostream> using namespace std; #define PI 3.14159265 class Circle { private: double radius; public: void setRadius(); void computeAreaCirc(); Circle(); ~Circle(); }; Circle::Circle() { radius = 0.0; } void Circle::setRadius() { radius = 5.6; } void Circle::computeAreaCirc() { cout << "Area of circle is: " << PI * (radius * radius) << endl; cout << "Circumference of circle is: " << 2 * PI * radius << endl; } Circle::~Circle() { } class Rectangle { private: double length; double width; public: void setLength(); void setWidth(); void computeArea(); Rectangle(); ~Rectangle(); }; Rectangle::Rectangle() { length = 0.0; width = 0.0; } void Rectangle::setLength() { length = 5.0; } void Rectangle::setWidth() { width = 4.0; } void Rectangle::computeArea() { cout << "Area of Rectangle: " << length * width << endl; } Rectangle::~Rectangle() { } main() { cout<<"********************SCIENTIFIC CALCULATOR********************"<<endl; cout<<""<<endl; int run = 1; string option, choice; while(run) { cout << "\nOPTION 1 for computing Area and Circumference of the circle" << endl; cout << "OPTION 2 for computing Area of the Rectangle" << endl; cout << "Select your desired option(1-2): "; cin >> option; if(option == "1") { Circle nCircle; nCircle.setRadius(); nCircle.computeAreaCirc(); cout << "Do you want to perform anyother calculation(Y/N):"; cin >> choice; if(choice == "Y" || choice == "y") { continue; } else { break; } } else if(option == "2") { Rectangle nRectangle; nRectangle.setLength(); nRectangle.setWidth(); nRectangle.computeArea(); cout << "Do you want to perform anyother calculation(Y/N):"; cin >> choice; if(choice == "Y" || choice == "y") { continue; } else { break; } } else { cout << "Invalid Option!, Option should be from (1-2)" << endl; } } }

Solution Ideas Please!

Q.1 Solution:
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Anti clockwise moment = Clockwise moment
8gN * d = 2gN * 2.5m
8d = 5Nm
d = 5/8
d = 0.625m
= 4 – d
= 4 – ( 0.625)
= 3.375m

Q. 2 Solution:
2d8517b3-5885-4944-b418-04e787ef907d-image.png
R = 0
Taking moment about ‘C’
w * 0.5 = 6 * 1N + 5 * 4m
0.5w = 26Nm
w = 26/0.5m
w = 52 N