The Number Pi (5.1.4)

Question 1

• Pi (π) can be defined as the circumference of a circle whose diameter is 1. π is an irrational number, so its decimal expression never terminates or repeats.

Answer 1

• Pi (π) can be defined as the circumference of a circle whose diameter is 1. π is an irrational number, so its decimal expression never terminates or repeats.

Question 2

• The area of a circle can be approximated by a rectangle.

Answer 2

• The area of a circle can be approximated by a rectangle.

Question 3

• Trigonometric functions often involve the number pi. Differentiating such functions requires the use of the Chain Rule.

Answer 3

• Trigonometric functions often involve the number pi. Differentiating such functions requires the use of the Chain Rule.