Practice problems of the area of a circle - page 5 of 17
Number of problems found: 335
- Right-angled triangle
Determine the area of a right triangle whose side lengths form successive members of an arithmetic progression, and the radius of the circle described by the triangle is 5 cm. - Perimeter of the circle
Calculate the perimeter of the circle in dm, whose radius equals the side of the square containing 0.49 dm². - CD disc
A compact disc has a diameter of 11.8 cm. What is its surface area in square centimeters? - Inscribed 44101
A circle is inscribed in the triangle with sides of 13 cm, 14 cm, and 15 cm. What is its radius?
- Diameter 2949
What is the diameter of a circle with an area of 35 cm square? - An equilateral
An equilateral triangle with a side of 10 m represents a wooden platform standing on a lawn. A goat is tied to a corner with a 15 m rope. What is the maximum amount of grazing area available to the goat? - The star
Find the area of the shaded part of the square with a side of 22 cm. - Circumference 61704
Calculate the area of a circle if its circumference is 21.98 dm. Express the result in square decimetres. - Circle - simple
Calculate the area of a circle in dm² if its circumference is 31.4 cm.
- Circles
The area of a circle inscribed in a square is 14. What is the area of a circle circumscribed around a square? - Triangle
Calculate the area of the triangle ABC if b = c = 17 cm, R = 19 cm (R is the circumradius). - Squaring the Circle
Find the side of the square with the same area as the circle of radius 18. - Quatrefoil
Calculate the quatrefoil area, inscribed in a square with a side of 6 cm. - Inscribed circle
The circle inscribed in a triangle has a radius of 3 cm. Express the area of the triangle using a, b, and c.
- Circle inscribed
Calculate the perimeter and area of a circle inscribed in a triangle measuring 3, 4, and 5 cm. - Calculate 83203
Calculate the area of a circle whose radius is 9m. (in square meters) - Clock hands
The hands-on clock shows the time of 12 hours and 2 minutes. Calculate the size of an acute angle between clock hands three hours later. - Seagull
An artificially created island in the shape of a circle with a radius of 50 m is overgrown with grass. The only exception is a landing area for helicopters in the shape of a rectangle measuring 15 m and 8 m. What is the probability that the flying seagull - 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?
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