| Circle properties |
| This week, you will begin to write your own VB programs 'from scratch' - you will need a pencil and some rough paper to plan your code. These exercises are centred around the properties of a circle Some maths revision: For all circles, we can use the following formulae: Circumference = 2 x pi x radius (Use 3.142 for pi) Area = pi x radius x radius Task 1 Write a program which does the following: - asks the user to enter the radius of the circle as an integer (whole number) - calculates the circumference of the circle - outputs the answer on a form with an appropriate message e.g. The circumference of the circle is ....... Task 2 Write a program which does the following: - asks the user to enter the radius of the circle as an integer (whole number) - calculates the area of the circle - outputs the answer on a form with an appropriate message Hints: - Remember that VB uses the asterisk (*) for the multiplication sign, not the letter 'x' - Remember that a whole number input as the radius will cause the answer to area to be a number with figures after a decimal point (a decimal) e.g. Area of circle with radius 2 = 6.284 Which type of variable allows numbers after the decimal point? - Remember that this problem is similar to the VAT calculation example - use that as a template if you are unsure about the coding. Save both programs to floppy disk Print out a copy of your code for both tasks |