The area of a shape of circle problems - page 3 of 19
Number of problems found: 375
- Circles
The area of a circle inscribed in a square is 7. What is the area of a circle circumscribed around a square?
- Percentage 82623
The square in the picture has a side length of 6 cm. What percentage of the area is the colored part?
- Flowerbed 25241
How large should we sow an area with grass in a circular flowerbed with a radius of 4m?
- 22/7 circle
Calculate approximately the area of a circle with a radius 12 cm. When calculating π, use 22/7.
- Fountain
Around a circular fountain with a diameter of 2m, there is a 0.5m wide strip of land for planting roses. How many m² of land do roses occupy?
- Diameter 82242
Around the circular pool with a diameter of 5.5 m is a circular wooden terrace with a width of 130 cm. What is the area size of this terrace?
- 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.
- Circumference 69934
You know the ratio of the circumference of the circle to the area is 4:9. What is the circle's diameter?
- Inscribed 7018
The dragon has the shape of a regular hexagon inscribed in a circle with a radius of 20 cm. What is the area of the dragon?
- The crane
The construction crane has a 20m long arm. What construction area in ares can it handle from this crane if it rotates around its axis?
- 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.
- Circular flowerbed
We split the circular flowerbed with a diameter 8 m by concentric circles to circles and annulus with the same area. Find the radius of the circle.
- Sprinkler 45721
The rotary sprinkler has a spray of 18m. How much land can it irrigate from one place?
- Circumference 6929
Two-thirds of the circumference of the circle is 12π cm long. Calculate the area of the circle.
- CD disc
A compact disc has a diameter of 11.8 cm. What is its surface area in square centimeters?
- Radius
Determine the circle's radius if its perimeter and area are the same numbers.
- Percentage 66714
They cut a full circle from a square plate with a side of 200 mm. What percentage is waste?
- 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 8325
Calculate the area of a circular section given by an angle of 220 degrees if the circle's radius is 20cm. Round the result to cm2
- Flowerbed 2801
A footpath 50 cm wide circles the circular flowerbed, with a diameter of 3.6 m. Calculate the footpath area.
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Examples of area of plane shapes. Circle practice problems.