Circle practice problems - page 3 of 50

Number of problems found: 992

Circle
What is the radius of the circle whose perimeter is 11 km?
Round cake
What is the area of a round cake with a radius of 5cm?
Circle simple
The circumference of a circle is 6.28. What is the area of the circle?
Circumference circles
What is the circumference and area of the circle if r = 18cm
Perimeter to area
Calculate the area of a circle with a perimeter of 15 meters.
Diameter to area
Find the area of the circle whose diameter is 26 cm.
Calculate 2948
Calculate the length of a circle with a diameter of 7 cm.
Wheel diameter
A 1m diameter wheel rolled along a 100m long track. How many times did it turn?
Increase 4957
How does the area of a circle change if we double its radius? How many times does its area increase?
22/7 circle
Calculate approximately the area of a circle with a radius 12 cm. When calculating π, use 22/7.
Clock
How long is the trajectory of the second hand of hours for day, if it is 15 mm long?
Circles
For the circle c₁(S₁; r₁=109 cm) and c₂(S₂; r₂ = 152 cm) is distance of centers |S₁S₂| = 261 cm. Determine the distance between the circles.
Illuminates 4961
The lamp illuminates a circle with a diameter of 10m. What area does the light illuminate?
Irrigates 4958
The water jet for welding the lawn reaches a distance of 1.8 m. How much is the lawn irrigated?
Determine 21053
Determine the radius of a circle whose length is 21.98 cm
Circumference 2951
What is the radius of a circle with a circumference of 28 cm?
Bicycle wheel
After driving 157 m, the bicycle wheel rotates 100 times. What is the radius of the wheel in cm?
Circumference 8395
The circle's circumference is 321 dm larger than the diameter of the circle. What is the average?
Circle - simple
The circumference of a circle is 683 mm. How long in mm is its diameter?
Radius
Determine the circle's radius if its perimeter and area are the same numbers.

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