Circle + subtraction - practice problems
Number of problems found: 49
- Concentric circles 4
One circle has a radius of 98 cm, and a second concentric circle has a 1m 26 cm radius. How much longer is the circumference of the second circle than that of the first? - The radius 2
The radius of a circle is increased by 5%. What is the percentage increase in their circumference area? - Merly
Merly prepared the table for lunch. She put a place mat that measures 5 dm long and 3 dm wide; she placed a plate on it with a diameter of 3 dm. How many mats can be seen on the table? - ET inscribed circle
An equilateral triangle has been inscribed in a circle with a radius of 4 cm . Find the area of the shaded region. - A goat 2
As shown, a goat is tied at one corner of a rectangular shed by a 5-meter-long rope. The shed measures 3 m by 2 m and is surrounded by grassland. What is the area of the grassland in which the goat can graze? Give your answer to the nearest m². - 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? - Students activities
There are 28 students in the class. Twenty-one of them is involved in-ring activities. What part of the class does not attend the circle? - Attended 63784
The math circle is attended by h = 10 boys and k = 5 girls. a) How many students go to the ring? b) How many students are in the ring if five girls and three boys are missing - Inner-circle 2902
The student should remove the inner circle with a radius of 3 cm from the circle with a radius of 7 cm. How much of the area of the large circle will be removed? Express result in percent. - Circumference 65134
Circle K has a radius of 130 mm, and circle L has a diameter of 50 mm. By how many millimeters is the circumference of circle K greater than the circumference of circle L? Round the result to a whole number. Use the value π= 3.14 in the calculations. - Drill bit
Bill's 3/8 inch drill bit is missing and is needed for a job. He can get by with drilling a smaller hole than 3/8 inch as long as it is as close to 3/8 inch as possible. Which of the following bits would be the best to use? A. 13/32 inch B. 23/64 inch C. - Difference 66354
A circle is inscribed in a square with a side of 12 cm so that it touches all its sides. Calculate the difference between the area of the square and the circle. - Calculate 39131
A circle describes a square with a side of 8 cm. Calculate the area of the rest of the circle if we cut out the square. - Percentage 66714
They cut a full circle from a square plate with a side of 200 mm. What percentage is waste? - Percentage 82623
The square in the picture has a side length of 6 cm. What percentage of the content is the colored part? - Square and circle
Into the square is an inscribed circle with a diameter of 10 cm. What is the difference between circumference square and circle? - The star
Find the area of the shaded part of the square with a side of 22 cm. - Rectangular 4959
In the workshop, they cut 50 circles with a diameter of 9 cm from a rectangular sheet with dimensions of 50 cm and 100 cm. What percentage of the sheet was a waste? - Company logo
The company logo consists of a blue circle with a radius of 4 cm and an inscribed white square. What is the area of the blue part of the logo? - Equilateral 81770
Calculate the area of the circle in which the hole is cut in the shape of an equilateral triangle when the diameter of the circle, d=32mm, and the side of the triangle, a=20.8mm.
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