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# Exercises - 2 - Calculations

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**Write a program to find Area and circumference of square and formula below**

**Area = a ^2**

**Circumference = 4 \* a**

Enter side of square: 5

Area of Square = 25

Circumference of Square = 20

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**Write a program to find Area and circumference of Rectangle and formula below**

**Area = Length \* Width**

**Circumference = 2 \* ( Length + Width )**

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**Write a program to find Area and circumference of Circle**

**Area = Pi \* R ^ 2**

**Circumference = 2 \* PI \* R**

**PI = 3.14**

**R = Radius**

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**Write a program to find the total and average mark of a student. List of Subjects - Tamil, english and math**

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**Write a program to find the total chicken price. Input will be how many kilos of chicken, Output will be total chicken price. 1KG = 180 Rs**

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**Write a program to find the discount price. Input will be Total purchase amount, Output will print how much discount and final amount to pay. Discount = 20%**

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**Write a program to find Simple Interest.**

Simple Interest = P \* N \* R / 100

P = Principle

N = Number of years

R = Rate of interest per annum

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**Write a program to find BMI**

BMI = Weight / Height^2

Weight in Kg

Height in meter

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