Radius and Diameter
Circumference
Area of Circles
Circumference Word Problems
Area Word Problems
100

What is the radius of a circle with a diameter of 10 cm?


What is 5 cm?

100

What is the formula for calculating the circumference of a circle?

 What is C=pi X d?

100

What is the formula for finding the area of a circle?

What is A=pi x r squared?

100

A pizza is 14 inches across. What is the circumference?

What is 43.96in?

100

A round table has a radius of 2 ft. What is the area of the table?

What is 12.56 square ft?

200

If the radius of a circle is 4 in, what is its diameter?

What is 8in?

200

Calculate the circumference of a circle with a radius of 5 cm.

What is 31.4?

200

Calculate the area of a circle with a radius of 3 cm.

What is 28.26 square cm?

200

If a circular garden has a radius of 6 ft, what is the circumference?

What is 37.68ft?

200

 If a circular logo has a diameter of 8 cm, what is its area?

What is 50.24 square cm?

300

How do you calculate the diameter if you know the radius?

What is multiply by 2?

300

If the circumference of a circle is 31.4 m, what is the radius?

What is 5m?

300

 If the area of a circle is 78.5 sq. cm, what is the radius?

What is 5cm?

300

A bike wheel has a radius of 15 in. How far does the bike travel after one complete rotation?

What is 94.2in?

300

A circular flower bed has an area of 78.5 sq. ft. What is the radius?

What is 5ft?

400

A circle has a diameter of 16 m. What is the radius?

What is 8m?

400

Find the circumference of a circle with a diameter of 12 inches.

What is 37.68?

400

Find the area of a circle with a diameter of 10 m.

What is 78.5m?

400

How much fencing is needed for a circular playground with a diameter of 20 ft?

What is 62.8ft?

400

How much of a lawn needs to be seeded for a circular yard with a radius of 7 m?

What is 153.86 square meters?

500

If a circle's radius is doubled, how does that affect the diameter?

What is the diameter would double?

500

A circle has a radius of 10 m. What is the circumference?

What is 62.8?

500

A circle has an area of 50.24 sq. m. What is its radius?

What is 4m?

500

A circular swimming pool has a radius of 12 m. What is the circumference of the pool?

What is 75.36m?

500

A circular pond has an area of 113.04 sq. m. What is the diameter of the pond?


What is 12 m?