Length - practice for 12 year olds - page 62 of 63
Number of problems found: 1249
- Rail turn
The curve radius on the railway line is 532 m. The length of the rail track on it is 818 m. How many degrees is the angle ASB if A and B are boundary points and S is the center of the arc curve? - Washer
The washing machine drum washes at 71 RPM. The washing machine motor pulley has a diameter of 8 cm. What must be the diameter of the drum machine pulley when the motor is at 351 RPM? - Water
Into a full cylindrical tank high 3 m with a base radius of 2.5 m, we insert a cuboid with dimensions 1.7 m, 1.3 m, 1.9 m. How many liters of water will overflow out? - 4-gon
Is it true that a 4-gon whose two sides are parallel and the other two have equal length is a parallelogram?
- Diagonal
Can a rhombus have the same length, diagonal, and side? - Chord
The point on the circle is the endpoint of diameter and endpoint of the chord length of the radius. What angle between chord and diameter? - Aircraft
Flight length 3457 km took 5 hours. The airport passengers had to arrive hours in advance, 2 hours. Departure was delayed for 6.4 hours. The destination airport formalities took 0.4 hours. Calculate the average speed of passenger travel from arrival to le - Trunk
Calculate the length of the biggest fishing rod that can be inserted into the trunk of a car with dimensions 165 x 99 × 85 cm. - Box
Calculate the angle between box base 9 x 14 and body diagonal length 18.
- Clock
How long is the trajectory of the second hand of hours for day, if it is 15 mm long? - Earth parallel
Earth's radius is 6370 km long. Calculate the length parallel to latitude 50°. - Equilateral triangle
Calculate the side of an equilateral triangle if its area is 886 mm². - Copper sheet
The copper plate has a length of 2.2 m, width 92 cm, and weighs 5.6 kg. What is the plate thickness if 1 m³ weighs 8732 kg? - Cylinder
Calculate the dimensions of rotating cylindrical containers with volume 2 l if the container's height equals the base's diameter.
- Car range
Kia has an average diesel consumption of 5 liters per 100 kilometers. What is the range of the car for 135 euros if fuel costs 1.4 EUR/liter, if the tank has a volume of 51 liters? - Pipe
Steel pipe has a length of 1.7 meters. About how many decimetres is 1/3 less than 8/9 of this steel pipe? - Copper plate
Copperplate length 3.2 m and width 50 cm weigh 55.42 kg. What is the plate thickness if 1 m³ of copper weighs about 8700 kg? - Magnification of the square
If we increase the square side, increase the area of the 70 %. About what percentage was increased on its side? - Circle and angle
What is the length of the arc of a circle with radius r = 207 mm with central angle 5.33 rad?
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