Radius & Diameter
Circumference
Area
Working Backwards
OH YEAAAHH
100

What is Radius?

Radius is the distance from the centre of a circle to any point of the circle.

100

What is Circumference?

Circumference is the distance around a circle.

100

What is the formula for area of a circle?

A= pi*r2

100

A bicycle wheel has a radius of 1 foot. If the bicycle wheel rotates one time, what distance is travelled?

What is 2pi or 6.28 feet.

100

Ms. Falconer has a daughter in this grade.



What is 6th?

200

What is Diameter?

The distance across a circle measured through its centre.

200

A circle has a diameter of 3 inches.  This is the circumference.

What is 9.42?

200

A circle has a diameter of 16. Find the area.

200.96

200

The circumference of a wheel is 113.04 inches.  What is the radius of the wheel?

What is 18 inches?


200

Mateo's birth month

April

300

The diameter is 10 meters. Find the radius.

the radius is 5 meters

300

A circle has a diameter of 102.38 inches.  What is the circumference?

What is 321.47 inches?

300

A circle has a radius of 50 miles. What is the area of the circle TO THE NEAREST MILE?

What is 7854 mi2.

300

If your circumference is 72.98 what is your radius?

What is 11.62?
300

The number of years Mrs. Falconer has been teaching.

24

400

The Diameter is 25 meters. What is the Radius?

The Radius is 12.5 meters.

400

A circle has a radius of 16 feet.  Find the Circumference.

100.48 feet

400

A pizza is 16 inches long (diameter). It is cut into 4 pieces. Jane eats 3 of the pieces. What is the area of pizza she is eating?

What is 48 pi in2

400

John owns a circular pool in his back yard. If he swims around the pool, he swims 30pi meters. What is the radius of this circle?

What is 15 meters.

400

The probability of rolling a 1 on a dice three times in a row

1/216

500

The Radius is  81 cm. What is the Diameter?

the Diameter is 162 cm.

500

If the radius is 123.45, this is the circumference.

What is 775.266?

500
If you diameter is 7.35 what is your area?
What is 42.41?
500

A circle has a circumference of

6pi

.

 What is the area?

What is 28.26

500

I3 stands for this.

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