Maths practice for 12-year-olds - page 210 of 348
Number of problems found: 6951
- National park
In the national park, the ratio of the wooded area to grassland is 4:1. The total area is 385 km². What area is wooded? - Orange juice
They have three types of juice in the buffet in the morning. /6 pcs orange, 4 pcs apple, 2 pcs currant/ In three hours, half of the currant juice and half of the apple juice were sold. No one had ordered orange juice by then. What part of the total supply - Cylindrical 7943
The outdoor pool has a cylindrical shape with an inner diameter of 3.6 m and a depth of 1.2 m. a) how long will it take to fill if 2 liters of water flow per second? b) how many crowns will it cost to fill the pool? (find out the price of 1 m³ of water. ) - Cylindrical 7942 The cylindrical container should have a volume of 1 liter and a height of 15 cm. What will be its average height?
- Cylindrical 7941
How high will 1 liter of water in a cylindrical vessel with a bottom diameter of 8 cm reach? - Container 7939
What diameter will a 20 cm high cardboard juice container have to fit half a liter? - Magnification 7927
The photo has 6cm and 9cm dimensions and should be enlarged 8:3. What will be the dimensions after magnification? - Construction 7926
Honza had 19 wheels in the kit. He used all these wheels in the construction of tricycles and scooters. How much does he assemble complete scooters, and how many tricycles? Find all solutions. - Different prices
Christopher sells 10 bells at different prices: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 euros. He needs to pack all the bells into 3 boxes so that the price of the bells in each box is the same. How many ways can he do this? a)1 b)2 c)3 d) 4 e) cannot be divided in - Equation: 7907
Solve the equation: 10x + 13-9 = (2001 + 4) / 5 + 130-101 - Constant motion
The car has undergone constant motion, traveling 120 km in 1 hour and 30 minutes. Determine its average speed. Also, determine how long the car drove in the first 20 minutes and 50 minutes after starting the move. - Circumference 7904
The rectangular plot has dimensions of 50 m and 100 meters. On the plain, its circumference is 60 cm. To what extent is the plan made? - Pyramid 7903
How does the volume of a pyramid change if we triple its height? - Closed drum
Find the total surface area of a closed cylindrical drum if its diameter is 50 cm and height is 45 cm. (π= 3.14) - A metal
A metal cylinder is inserted into the cube with a 20 cm edge so that the cylinder shell. Its two bases are in close contact with the cube's walls from the inside. How much water could be poured into the free space between the cube and the cylinder so that - Cylinder pot
The cylinder-shaped pot has a bottom diameter of 28 cm and a height of 36 cm and is two-thirds full of tea. Will this tea be enough for 50 children if we serve it in full 3 dl glasses? - Cylindrical 7891
Is it possible to pour water from a full cube-shaped container measuring 8 cm, 10 cm, and 12 cm into a cylindrical container with a bottom diameter of 12 cm and a height of 8 cm? - Transport 7890 The sheet metal keg for oil transport has the shape of a cylinder with a volume of 62.8 liters and a height of 0.5 m. How many kg of paint do we need to paint if we need 1 kg of paint for 1.5 m²?
- Raspberry juice
The children from the scout troop went to a restaurant for refreshments after the trip, where each child ordered one of three drinks - raspberry juice, sparkling water, and kofola. A fifth of the children had raspberry juice, five children ordered sparkli - Pumps
After the floods, four equally powerful pumps exhausted water from the flooded cellar in 6 hours. How many hours would it take to drain out with three equally powerful pumps?
Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
