# Area + length - math problems

#### Number of problems found: 391

• Described
Calculate perimeter of the circle described by a triangle with sides 478, 255, 352.
• Right isosceles
Calculate area of the isosceles right triangle which perimeter is 26 cm.
• Right triangle
Right triangle ABC with side a = 19 and the area S = 95. Calculate the length of the remaining sides.
• Cubes
Surfaces of cubes, one of which has an edge of 48 cm shorter than the other, differ by 36288 dm2. Determine the length of the edges of this cubes.
• Rail turn
The curve radius on the railway line is 532 m . Length of rail track on it is 818 m. How many degrees is the angle ASB, if A and B are boundary points and S is center of arc curve.
• Floor
The floor area of ​​the room is 31 m2 and has a width of 4.3 m. How many centimeters of circumference measured the floor on the map at the scale 1:75?
• Garden
The garden has two opposite parallel fences. Their distance is 33.1 m. Lengths in these two fences are 75.5 meters and 49.4 meters. Calculate the area of this garden.
• Arc and segment
Calculate the length of circular arc l, area of the circular arc S1 and area of circular segment S2. Radius of the circle is 11 and corresponding angle is (2)/(12) π.
• Sphere
The surface of the sphere is 12100 cm2, and the weight is 136 kg. What is its density?
• Garden
How many steps of 76 cm circumvent square garden with area 1.8 ha?
• Rainfall
Annual rainfall in our country is an average of 797 mm. How many m3 of water rains on average per hectare?
• 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.
• Cap
Jesters hat is shaped by a rotating cone. Calculate how much paper is needed to the cap 54 cm high when the head circumference is 47 cm.
• Copper sheet
The copper plate has a length of 1 m, width 94 cm and weighs 9 kg. What is the plate thickness, if 1 m3 weighs 8715 kg?
• Black building
Keith built building with a rectangular shape 6.5 m × 3.9 m. Calculate how much percent exceeded the limit 25 m2 for small building. Building not built in accordance with the law is called "black building". Calculate the angle that the walls were clenchi
• Right triangle
Legs of the right triangle are in the ratio a:b = 2:8. The hypotenuse has a length of 87 cm. Calculate the perimeter and area of the triangle.
• Magnification of the square
If we increase the square side, increase the content of the 70 %. About what percentage was increased his sides?
• Circle and angle
What is the length of the arc of a circle with radius r = 207 mm with cental angle 5.33 rad?
• Similarity n-gon
9-gones ABCDEFGHI and A'B'C'D'E'F'G'H'I' are similar. The area of 9-gon ABCDEFGHI is S1=190 dm2 and the diagonal length GD is 32 dm. Calculate area of the 9-gon A'B'C'D'E'F'G'H'I' if G'D' = 13 dm.

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