Grade - math word problems
Number of problems found: 6697
- Minute angle
Determine size of angle, which takes minute hand for 75 minutes.
- Guess number
With what number should be divided, number 9727 to be reduced by 70%?
The triangle is one outer angle 158°54' and one internal angle 148°. Calculate the other internal angles of a triangle.
- Secret number
Determine the secret number n, which reversed decrease by 16.4 if the number increase by 16.4.
Calculate the length of the belt on pulleys with diameters of 105 mm and 393 mm at shaft distance 697 mm.
- Earth parallel
Earth's radius is 6370 km long. Calculate the length parallel of latitude 50°.
- Tree trunk
Calculate the average tree trunk with a circumference of 149 cm.
How long is the trajectory of the second hand of hours for day, if it is 15 mm long?
Seedcake costs 44 cents. How many minimum seedcakes we must buy that we can pay in cash only whole euros?
- Track arc
Two straight tracks is in an angle 74°. They will join with circular arc with radius r=1127 m. How long will be arc connecting these lines (L)? How far is the center point of arc from track crossings (x)?
The train passes part of the line for 95 minutes at speed 75 km/h. What speed would have to go to shorten the driving time of 20 minutes?
Tourist walk at 4.1 km/h. Every 5 km have 20-minute break. How many kilometers passed, when started at 4:40 and finished at 10:30?
- Conserving water
Calculate how many euros are spent annually on unnecessary domestic hot water, which cools during the night in pipeline. Residential house has 129 m of hot water pipelines 5/8" and the hot water has a price of 7 Eur/m3.
- Heron backlaw
Calculate missing side in a triangle with sides 25 and 13 and area 152.
- Sphere cuts
At what distance from the center intersects sphere with radius R = 56 plane, if the cut area and area of the main sphere circle is in ratio 1/2.
- Sphere slices
Calculate the volume and surface of a sphere if the radii of parallel cut r1=31 cm, r2=92 cm, and its distance v=25 cm.
- Equilateral triangle
Calculate the side of an equilateral triangle if its area is 892 mm2.
- Right triangle
Right triangle legs has lengths 630 mm and 411 dm. Calculate the area of this triangle.
Determine the side of diamond if its content is S = 353 cm2 and one diagonal u2 = 45 cm.
Calculate heights of the triangle ABC if sides of the triangle are a=82, b=44, and c=53.