1. WRITE A PROGRAM TO CALCULATRE THE AREA OF A RECTANGLE OF LENGTH =5 CM AND BREADTH=8CM.

2. CALCULATE THE PRICE OF AN ITEM COSTING 100 GHANA CEDIS AFTER A DISCOUNT OF 10% IS APPLIED TO IT.
3. WRITE A PROGRAM TO CALCULATE THE SIMPLE INTEREST ON A LOAN AMONUT OF 50000 GHANA CEDIS AT AN INTEREST RATE OF 30% FOR A NUMBER OF YEARS WHICH WILL BE SPECIFIED BY THE USER.
4. WRITE A PROGRAM TO CALCULAT THE AGE OF THE USER AFTER THE USER ENTERS HIS OR HER YEAR OF BIRTH.

Please release that Caps Lock key. I don't know if anyone can read that.

Write a program? A computer program? A theater program? And what on Earth is "gtuc"?

1. To calculate the area of a rectangle, you need to multiply its length by its breadth. Here's a simple program in Python to calculate the area:

```python
length = 5 # cm
breadth = 8 # cm

area = length * breadth

print("The area of the rectangle is:", area, "cm^2")
```

2. To calculate the price after a discount is applied, you need to subtract the discount amount from the original price. Here's an example in Python:

```python
original_price = 100 # Ghana Cedis
discount_percentage = 10 # %

discount_amount = original_price * (discount_percentage / 100)
final_price = original_price - discount_amount

print("The price after a 10% discount is:", final_price, "Ghana Cedis")
```

3. To calculate the simple interest on a loan, you need to multiply the principal amount, interest rate, and time (in years) and divide it by 100. Here's a program in Python which takes the loan amount and the number of years as user input:

```python
principal = 50000 # Ghana Cedis
interest_rate = 30 # %
years = int(input("Enter the number of years: "))

simple_interest = (principal * interest_rate * years) / 100

print("The simple interest on the loan amount is:", simple_interest, "Ghana Cedis")
```

4. To calculate the age of a user given their year of birth, you need to subtract their birth year from the current year. Here's a program in Python to calculate the age:

```python
import datetime

current_year = datetime.datetime.now().year
birth_year = int(input("Enter your birth year: "))

age = current_year - birth_year

print("Your age is:", age, "years")
```

These are basic examples of how to solve the given problems using programming. You can modify them as per your needs or programming language of choice.