Radius & Diameter
What is Radius?
Radius is the distance from the centre of a circle to any point of the circle.
What is Circumference?
Circumference is the distance around a circle.
What is the formula for area of a circle?
A= pi*r2
A bicycle wheel has a radius of 1 foot. If the bicycle wheel rotates one time, what distance is travelled?
What is 6ft.
What is date next Monday?
December 7, 2025
What is Diameter?
The distance across a circle measured through its centre.
A circle has a diameter of 3 inches. This is the circumference.
What is 9?
A circle has a diameter of 16cm. Find the area.
192cm2
The circumference of a wheel is 120 inches. What is the radius of the wheel?
What is 20 inches?
How many students does Mr. MacBeth teach?
52 students
Find the distance travelled by Elena if her bicycle wheels rotated 10 times and the radius is 0.5m.
What is 30m?
A circle has a diameter of 100 inches. What is the circumference?
What is 300 inches?
A circle has a radius of 50km. What is the area of the circle?
7500km2.
If your circumference is 75cm what is your radius?
What is 12.5cm?
How many cubes are there on a rubik's cube?
27 cubes?
Clare has a round tablecloth with a radius of 4 feet. What is the tablecloth's area?
What is 48ft?
A circle has a radius of 15 feet. Find the Circumference.
What is 90ft?
A pizza is 12 inches long (diameter). What is the area of 1/2 of the pizza?
What is 216in2?
John owns a circular pool in his back yard. If he swims around the pool, he swims 90 meters. What is the radius of this circle?
What is 15 meters.
What is Mr. MacBeth's number in rugby?
#13
The diameter of a circular park is 50m. Find the cost of fencing it at $4 per meter.
What is $600?
If the radius is 37.5cm. what is the circumference?
What is 225cm?
If your circumference is 30m, what is your area?
What is 75m2?
A circle has a circumference of 18cm. What is the area?
What is 27cm2
What is the 99th multiple of 17?
1683