Numbers - math word problems
Determine the interior angles of a rhombus with area 319.1 cm2 and perimeter 72 cm.
- Quarter circular
The wire that is hooked around the perimeter of quarter-circular arc has length 3π+12. Determine the radius of circle arc.
- Pyramid roof
2/4 of area of the roof shaped regular tetrahedral pyramid with base edge 10 m and height of 4 m is already covered with roofing. How many square meters still needs to be covered?
Once upon a time, tsar owned a money printer and printed and printed. The result of printing money prices went up,in the first year 3.9 %, in the second 6%, in the third 4.7% and in the fourth 5.5%. Then tsar was failed in election. Calculate the aver
Camel owner wants to get out of the city into oasis. He bought 3000 bananas, which wants to sell in oasis. However oasis from the city divided 1,000 kilometers of desert. Camel can carry at one time up to 1000 bananas, and for every kilometer traveled, ea
- Negative percentage
In 2004, the company had a loss of 40900 Euros. Two years later he was already in profit 48900 Eur. Calculate what percentage of the company increased profits in this two years.
When gas consumption, the consumer may choose one of two rates: rate A - which pays 0.4 € per 1 m3 of gas a flat monthly fee of 3.9 € (regardless of consumption) rate B - which pays 0.359 € per 1 m3 of gas a flat monthly fee of 12.5 € From what monthl
What power has a pump output to move 4853 hl of water to a height of 31 m for 8 hours?
The barrel is 199 litres of 38% acid. How many percent acid occurs when 61 litres revoke and replace it with the same amount of water?
- One sixth
How many sixths are two thirds?
Video is 153% more expensive than tape recorder. How many percent is tape recorder less expensive than video?
In the bowl are plums. How many would be there if we can divide it equally among 8, 10 and 11 children?
How many ways are there to arrange 6 books on a shelf?
- Diagonals of the rhombus
Calculate height of rhombus whose diagonals are 12 cm and 19 cm.
In the market have 3 kinds of chocolates. How many ways can we buy 14 chocolates?
- Diofant 2
Is equation ? solvable on the set of integers Z?
How many times should be broken chocolate consisting of 10 × 12 pieces to get the 120 parts?
In the center of the cube with edge 14 cm we will drill cylinder shape hole. Volume of the hole must be 27% of the cube. What drill diameter should be chosen?
56 children lined up in groups of three. How many children did not create a trio?
Tinsmith construct chimney pipe 145 cm long and 15 cm wide. What are the dimensions of the sheet will have to prepare for the construction of a pipe when the plate overlap at the joint add $x cm width of the plate?