Circle - examples
- Diameter to area
Find the area of a circle whose diameter is 26cm.
- 2d shape
Calculate the content of a shape in which an arbitrary point is not more than 3 cm from the segment AB. The length of the segment AB is 5 cm.
- Cylinder - h
Cylinder volume is 129 cm3. Base radius is 3 cm. Calculate the height of the cylinder.
- MO SK/CZ Z9–I–3
John had the ball that rolled into the pool and it swam in the water. Its highest point was 2 cm above the surface. Diameter of circle that marked the water level on the surface of the ball was 8 cm. Determine the diameter of John ball.
- OK circle
Calculate the radius (circumradius) of the circle described right triangle with hypotenuse long 8 and one cathetus long 4.
- Circle chord
What is the length d of the chord circle of diameter 58 mm, if distance from the center circle is 24 mm?
Determine the radius of the circle, if its perimeter and area is the same number.
For the circle c1(S1; r1=177 cm) and c2(S2; r2 = 149 cm) is distance of centers |S1S2| = 332 cm. Determine the distance between the circles.
Circle arc corresponding to angle is 193° is 23 dm long. What is the length of the entire circle?
Conduit has a cross section 222 mm. Maybe put it into 6 conductors with a cross section S2 $mm2?
How many times a day hands on a clock overlap?
How many intersections have circles with radius 12 dm and 17 dm, if the distance of their centers is 20 dm.
Semicircle estate must be fence. The straight section has 44 meters long fence. How many meters of fence should buy?
Cylinder shell has the same content as one of its base. Cylinder height is 25 m. What is the radius of the base of the cylinder?
What is the radius of the circle whose perimeter is 10 km?
Wheel in traction tower has a diameter 5 m. How many meters will perform an elevator cabin if wheel rotates in the same direction 10 times?
Three circles of radius 71 cm 76 cm and 22 cm is mutually tangent. What is the perimeter of the triangle whose vertices are centers of the circles?
Washing machine drum wash at 75 RPM. Washing machine motor pulley has diameter 6 cm. What must be the diameter of the drum machine pulley when the motor is at 316 RPM?
- The bridge
Across the circle lakepasses through its center bridge over the lake. At three different locations on the lake shore are three fishermen A, B, C. Which of fishermen see the bridge under the largest angle?
- Square and circles
Square with sides 82 km is circumscribed and inscribed with circles. Determine the radiuses of both circles.