Quiz Answer Key and Fun Facts
1. Leonhard Euler started using pi as the notation for the constant 3.141... in the year 1737. Pi is the 16th letter in the Greek alphabet, which signifies?
2. One of the formulae to calculate the value of pi is given by pi = 4(1 - 1/3 + 1/5 - 1/7 + 1/9 -...). This formula is known as?
3. A sphere's volume can be calculated by using the formula V = (4/3) x pi x r^3 and the formula A = 4 x pi x r^2 gives the area of the sphere. What is the formula of the area of a hemispherical solid?
4. Which of the following statements is FALSE?
5. Apart from being used in calculating the areas of circles and volumes of cylinders, pi is also used in the calculations of trigonometric functions. In geometry, pi = 3.141..., but in trigonometry, 1 pi radian equals to how many degrees?
6. The value of e is 2.718... Which of the following numbers is the closest to the value of [e^(pi)] - pi?
7. There exist many mathematical formulae to calculate the value of pi. One of them was discovered by a famous mathematician from India. Who was he?
8. A very famous mathematical equation that contains pi is f(x) = {1/[sigma x surd (2 x pi)]} x e^a, where a = -(mean-miu)^2/(2 x sigma^2). This equation is used in which field of mathematics?
9. A retired Japanese engineer, Akira Haraguchi has memorized pi up to 100, 000 digits. He achieved this by using a mnemonics system. Which of the following sentence is NOT a pi mnemonic?
10. The pi constant appears not only in mathematics, but also in chemistry and physics equations.
Source: Author
Matthew_07
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