Maths practice for 11-year-olds. - page 228 of 229
Number of problems found: 4566
- 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.
- Pension or fraud
Imagine your entire working life working honestly and paying taxes and Social Insurance (in Slovakia). You have a gross wage 970 Euros. You pay social insurance (you and your employer) monthly € 310 during 41 years, and your retirement is 446 Eur dur
- Rhombus angles
If one angle in the rhombus is 137.6°, what is its neighboring angle in the rhombus?
- Rhombus HP
Calculate the area of the rhombus with height 48 cm and perimeter 64 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.
- Ratio
5 numbers are in the ratio 1:2:4:5:5. Their sum is 29172. What are the numbers?
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