Mathematics: Area and Perimeter Formulas
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Questions and Answers

What formula would you use to calculate the area of a rectangle given its length and breadth?

  • length * breadth (correct)
  • length + breadth
  • length / breadth
  • 2 * (length + breadth)

    • How is the circumference of a circle computed given its radius?

  • π * radius^2
  • 2 * radius
  • radius + radius
  • 2 * π * radius (correct)

    • Which of the following correctly represents the perimeter of a rectangle?

  • length * breadth
  • 2 * (length + breadth) (correct)
  • length^2 + breadth^2
  • length + breadth

    • If the radius of a circle is doubled, how does the area of the circle change?

    <p>It quadruples</p> Signup and view all the answers

    Which of the following formulas calculates the area of a circle given its radius?

    <p>π * radius^2</p> Signup and view all the answers

    In a C program, how would you declare variables to store the length and breadth of a rectangle?

    <p>You would use <code>float length, breadth;</code> to declare variables for the rectangle's dimensions.</p> Signup and view all the answers

    What C function can you use to calculate the area of a rectangle with given length and breadth?

    <p>You can use the function <code>area = length * breadth;</code> to calculate the rectangle's area.</p> Signup and view all the answers

    Describe how you would compute the circumference of a circle in a C program given its radius.

    <p>The circumference can be calculated using <code>circumference = 2 * M_PI * radius;</code></p> Signup and view all the answers

    What is the formula for calculating the perimeter of a rectangle in a C program?

    <p>The perimeter can be calculated by <code>perimeter = 2 * (length + breadth);</code></p> Signup and view all the answers

    How do you include the math library in your C program to perform calculations for the area and circumference?

    <p>You include it by using <code>#include &lt;math.h&gt;</code> at the beginning of your program.</p> Signup and view all the answers

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