Calculate Circle Area Using Function
C++
Easy
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Problem Description
Function to calculate area of circle given radius.
Real Life: Like measuring area of circular garden.
Step-by-Step Logic:
1. Function takes radius as parameter
2. Use formula: Area = π × radius × radius
3. Calculate and return area
4. Print the area
Official Solution
float calculateCircleArea(float radius) {
float pi = 3.14159;
float area = pi * radius * radius;
return area;
}
void function_q4_circle_area() {
float r = 7.0;
float area = calculateCircleArea(r);
cout << "Area of circle with radius " << r << " is: " << area << endl;
}
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