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Mathematics: Area and Perimeter Formulas

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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?

It quadruples Signup and view all the answers

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

π * radius^2 Signup and view all the answers

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

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

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

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

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

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

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

The perimeter can be calculated by <code>perimeter = 2 * (length + breadth);</code> 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?

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