Circumference of a Circle Given Radius
Circumference of a Circle Given Diameter
Area of a Circle Given Radius
Area of a Circle Given Diameter
Percentage Equations
100
Calculate the circumference of a circle given the value of Pi=3.14 and a radius of 2.
What is 12.56, 13, 12.6?
100
Calculate the circumference of a circle given the value of Pi=3.14 and a diameter of 1.
What is 3.14, 3, 3.1?
100
Calculate the area of a circle given the value of Pi=3.14 and a radius of 1.
What is 3.14?
100
Calculate the area of a circle given the value of Pi=3.14 and a diameter of 10
What is 78.5?
100

Write the equation you would use to answer this question:

What is 45% of 68? 

What is "X = 0.45(68)?"

200
Calculate the circumference of a circle given the value of Pi=3.14 and a radius of 16.
What is 100.48, 100, 100.5?
200
Calculate the circumference of a circle given the value of Pi=3.14 and a diameter of 10.
What is 31.4?
200

Calculate the radius of a circle that has a value of Pi=3.14 and an area of 28.26 ft squared.

What is 3 ft?

200
Calculate the area of a circle given the value of Pi=3.14 and a diameter of 40
What is 1256?
200

Set up an equation to answer this question:

What percentage of 3000 is 333? 

What is 3000(P) = 333

(Remember to move the decimal point over two places to the right after you find the quotient to change the decimal into a percentage.)


300
Calculate the circumference of a circle given the value of Pi=3.14 and a radius of 10.
What is 62.8, 63?
300
Calculate the circumference of a circle given the value of Pi=3.14 and a diameter of 5.
What is 15.7?
300
Calculate the area of a circle given the value of Pi=3.14 and a radius of 5
What is 78.5, 79?
300
Calculate the area of a circle given the value of Pi=3.14 and a diameter of 8
What is 50.24, 50, 50.2?
300

Set up an equation to answer this question:

92% is 128 of what number?

0.92 = 128N

400

The circumference of a circle is 97.3 inches. Find the radius.

What is 15.15 inches?

400

The circumference of a circle is 78.5 ft. What is the diameter? 

What is 25 ft?

400
Calculate the area of a circle given the value of Pi=3.14 and a radius of 7.25
What is 165.04, 165?
400
Calculate the area of a circle given the value of Pi=3.14 and a diameter of 16
What is 200.96, 201?
400

My new ear buds were originally $345 at the local electronics store. The bright green and white advertisement flyer stated, "Take 45% off the price of any pair of airbuds in the store!" 

Use a percent equation with a decimal to answer the following question:


What was the price of the earbuds after the discount?

0.45 • 345 = Discount 

Original price =  $345.00

Discount          - $155.25

What is $189.75?

500
The circular water fountain in my garden has a circumference of 9.42 feet. I will need to find the radius so I can put a net inside for my Koi goldfish. What is the radius?

What is 1.5?

500

I originally wanted a circular breakfast room with an area of 50.24 square feet. The builder firmly suggested using just half of a circle for the space to save $$ on the windows. I choose tile for the breakfast room and a cherry wood floor for the kitchen. To make the transition between the breakfast room and kitchen look smooth, I will need to buy a thin strip of wood to divide the kitchen from the breakfast room. How many feet of this thin strip will be needed for this transition piece?

What is 8 feet?

1. Find the radius: 50.24÷3.14 = 16 

2. Find the square root of 16, which is 4.

3. Double the radius to find the diameter = 8.

500
Calculate the area of a circle given the value of Pi=3.14 and a radius of .75
What is 1.77, 2, 1.8?
500
Calculate the area of a circle given the value of Pi=3.14 and a diameter of 1
What is .785, .8, .79?
500

I paid $32,892 for a beautiful used Honda Pilot, complete with leather seats and a moon roof! The original price was $55,000. What percent of the original price did I pay?

You must use a percentage equation to answer this question AND you must round to the nearest whole percent.

What is $32,892 = P• ($55,000)

P = 0.5980

Move decimal point to change to a percent:

I paid 60% of the original price for my new Honda.