Circle practice problems - page 3 of 50
Number of problems found: 990
- Round cake
What is the area of a round cake with a radius of 5cm? - Circumference circles
What is the circumference and area of the circle if r = 18cm - Circle
What is the radius of the circle whose perimeter is 11 km? - Wheel diameter
A 1m diameter wheel rolled along a 100m long track. How many times did it turn? - Calculate 2948 Calculate the length of a circle with a diameter of 7 cm.
- Different circles
Draw five circles with different radii. Measure the diameter of each circle and compare it to its radius. What is true about them? - The formula
The formula for the area of a circle is (Pi x r x r), where r = measure of the radius and Pi = 3.14. What is the area of a circle whose radius measures 1 cm?
- Diameter to area
Find the area of the circle whose diameter is 26 cm. - Circumference - a simple
What is the ratio of the circumference of any circle and its diameter? Write the result as a real number rounded to 2 decimal places. - Members 82412
There are 12 girls in the circle. Girls make up 2/3 of all members. How many boys are there in the circle? - The ratio
The ratio of the lengths of the two circles is 5:2. Find the ratio of a a) the radii of these circles b) the areas for these circles - Circle - easy 2
The circle has a radius of 6 cm. Calculate its diameter, perimeter, and area: - Perimeter to area
Calculate the area of a circle with a perimeter of 15 meters. - Irrigates 4958
The water jet for welding the lawn reaches a distance of 1.8 m. How much is the lawn irrigated? - Bicycle wheel
After driving 157 m, the bicycle wheel rotates 100 times. What is the radius of the wheel in cm?
- Clock
How long is the trajectory of the second hand of hours for day, if it is 15 mm long? - Diameter 23831
How often does a bicycle wheel with a diameter of 50 cm turn on a route 10 km long? The result round to an integer. - Illuminates 4961
The lamp illuminates a circle with a diameter of 10m. What area does the light illuminate? - Increase 4957
How does the area of a circle change if we double its radius? How many times does its area increase? - The tire
The tire of a car has a radius of 10.5 inches. How many revolutions does the tire need to make for the car to travel 13,200 inches? Round to the nearest whole revolution.
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