Maths practice for 11-year-olds. - page 194 of 195
Number of problems found: 3881
- Collective irresponsibility
On the Internet, time is very uncomfortable for the state that no more gaffes or waste is no longer possible to hush up as if people were at home with only two television channels censored. An example of the effectiveness of the state can be Bridge at Kom
- Isosceles trapezium
Trapezoid YUEB (YU||EB) is isosceles. The size of the angle at vertex U is 49 degrees. Calculate the size of the angle at vertex B.
- Garden
Trapezoid garden has parallel sides 19 m and 24 m. Its area is 193.5 square meters. What is the width of the garden?
- Area of trapezoid
The trapezoid bases are 9 dm and 7 dm. Its height is 3 cm. Calculate the area of the trapezoid.
- Rectangular trapezoid
How many inner right angles have a rectangular trapezoid?
- Present
The gift box has a rectangular shape with dimensions of 8×8×3 cm. Miloslav wants to cover it with square paper with sides of 18 cm. How much paper was left to him?
- Monkey
The monkey fell into 20 meters deep well. Every day it climbs 3 meters, at night it drops back by 2 m. On what day it gets out from the well?
- Circles
For the circle c1(S1; r1=109 cm) and c2(S2; r2 = 152 cm) is distance of centers |S1S2| = 261 cm. Determine the distance between the circles.
- Aquarium
An aquarium is a rectangular box with a square base containing 76 liters of water. The length of the base edge is 42 cm. To what height does the water level rise?
- Shape
The plane shape has a maximum area 677 mm². Calculate its perimeter if the perimeter is the smallest possible.
- Maximum area of rhombus
Calculate the interior angles at which the equilateral rhombus has a maximum area.
- Rhombus HP
Calculate the area of the rhombus with height 75 cm and perimeter 16 cm.
- Rhombus problem
The perimeter of the rhombus is 268 m, and its area is 2278 m². Calculate the height of the rhombus.
- Playground
The rectangular playground is fenced with 38 m long netting. Its width is 7 m. Calculate its length.
- Garden plot
Calculate how many meters of the fence need to fence the square garden with a length and width of 12 meters.
- Scientists from the Social Insurance
Aaron became on sick leave, and social insurance granted him sick leave of 13.8211695 EUR per day. Calculate the number of days to save Aaron from rolling in the price of 0.1 Eur if they postpone the amount of the last decimal place of his sickness every
- Triangles
An equilateral triangle with a side of 16 cm has the same perimeter as an isosceles triangle with an arm of 23 cm. Calculate the base x of an isosceles triangle.
- Reconstruction of the corridor
Calculate how many minutes will be reduced to travel a 167 km long railway corridor, where the maximum speed increases from 120 km/h to 160 km/h. Calculate how many minutes will shorten travel time if we consider that the train must stop at 6 stations. Ea
- Ultra expensive ramps
The village Čakajovce have two-level railway crossings (the ramps), the railway company ZSR decided to replace it. The price for upgrading the two crossings is 302065 Euros. Calculate how we can obtain many houses for 77000 euros at this price. Calculate
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