Pi Jeperdy

Equations

100

Delilah measured the perimeter of the circular section of table as 88 inches. Calculate the diameter of the same pipe using the pi formula.

 (Use π = 3.14 )

= 28 inches (approx).

200

The diameter of a circular greenhouse measures 200 inches. Using Pi formula calculate how much distance have you covered if you walked exactly 1 round across its boundary. (Use π = 3.14 )

Total distance walked is 628 inches.

300

Martha measured the perimeter of the circle as 66 units and the diameter of the same circle is 21 units. Using the Pi formula verify the value π = 3.14 or 22/7.

 3.14(approx)

400

Lily walks around a circle which has a diameter of 100 m, how far has Lily walked?

314.159 m

squaredd

100

A circle has a radius of 7cm.

Calculate its area.

153.94 cm²

200

The diameter of a circle is 20mm.

Calculate its area.

314.2 mm²

300

A circle has a radius of 18m.18m.

Calculate its area.

324π m²

400

A circle has a diameter of 210km.

Calculate its area.

11025π m²

500

A circle has a circumference of 12cm.

Calculate its area.

^11.46cm2

circumference of a circle

100

What is the circumference of a circle with a radius equal to 7?

Possible Answers:

A-7π

B-196π

C-49π

D-14π

D-14π

200

The radius of a circle is t2. Give the circumference of the circle in terms of t.

Possible Answers:

A-πt²

B-4πt²

C-2πt

D-2πt²

E-πt

D-2πt²

300

What is the circumference of a circle with a radius of 8?

Possible Answers:

A-16

B-16π

C-28π

D-16π²

E-8π

16π

400

If this circle has a diameter of 12 inches, what is its circumference?

Possible Answers:

A-12π inches

B-38 inches

C-44 inches

D-6π inches

E-none of these

A-12π inches

500

If a circle has an area of 81π, what is the circumference of the circle?

Possible Answers:

A-9π

B-90π

C-18π

D-27π

E-81π

C-18π

Pi

100

What is the value of Pi (π) up to four decimal places?

a) 3.1428

b) 3.1416

c) 3.1415

d) 3.1499

b) 3.1416

200

What is the significance of March 14 for Pi Day?

a) It is the birthday of Isaac Newton

b) The date represents the first three digits of Pi (3.14)

c) Pi was discovered on this day

d) It marks the end of the mathematical year

b) The date represents the first three digits of Pi (3.14)

300

Which famous scientist was born on Pi Day (March 14)?

a) Stephen Hawking

b) Albert Einstein

c) Galileo Galilei

d) Nikola Tesla

 b) Albert Einstein

400

What is Pi classified as in mathematics?

a) A rational number

b) A whole number

c) An irrational number

d) A prime number

 c) An irrational number

500

Which fraction is commonly used as an approximation for Pi?

a) 19/5

b) 22/7

c) 7/3

d) 9/2

b) 22/7