Real numbers + area - math problems

Number of problems found: 23

  • Copper winding
    Calculate the current flowing through the copper winding at an operating temperature of 70°C. Celsius, if the winding diameter is 1.128 mm and the winding length is 40 m. The winding is connected to 8V.
  • Triangle ABC
    Calculate the sides of triangle ABC with area 1404 cm2 and if a: b: c = 12:7:18
  • Garden
    The area of a square garden is 2/9 of triangle garden with sides 160 m, 100 m, and 100 m. How many meters of fencing need to fence a square garden?
  • Cube zoom
    How many percents do we increase the volume and surface of the cube if we magnify its edge by 38 %?
  • Gutter
    How much metal is needed for production 60 pieces of gutter pipes with the diameter 17 cm and length of 6 m? The plate bends add 6% of the material.
  • Cylinders
    The area of the side of two cylinders is the same rectangle of 33 mm × 18 mm. Which cylinder has a larger volume and by how much?
  • Angles
    Determine the interior angles of a rhombus with area 319.1 cm2 and perimeter 72 cm.
  • Regular 5-gon
    Calculate the area of the regular pentagon with side 7 cm.
  • Right Δ
    A right triangle has the length of one leg 11 cm and the hypotenuse 61 cm size. Calculate the height of the triangle.
  • Area of RT
    Calculate the right triangle area that hypotenuse has length 14, and one hypotenuse segment has length 5.
  • Area 4gon
    Calculate the area of 4-gon, two, and the two sides are equal and parallel with lengths 11, 5, 11, and 5. Inner angles are 45°, 135°,45°, 135°.
  • Described
    Calculate perimeter of the circle described by a triangle with sides 478, 255, 352.
  • Area of RT
    The right triangle has orthogonal projections of legs to the hypotenuse lengths 15 cm and 9 cm. Determine the area of ​​this triangle.
  • Square
    Points A[9,9] and B[-4,1] are adjacent vertices of the square ABCD. Calculate the area of the square ABCD.
  • Square 2
    Points D[10,-8] and B[4,5] are opposed vertices of the square ABCD. Calculate area of the square ABCD.
  • Cubes
    One cube is an inscribed sphere and the other one described. Calculate the difference of volumes of cubes, if the difference of surfaces in 257 mm2.
  • Axial section
    The axial section of the cone is an equilateral triangle with area 168 cm2. Calculate the volume of the cone.
  • Cone A2V
    The surface of the cone in the plane is a circular arc with central angle of 126° and area 415 cm2. Calculate the volume of a cone.
  • Rotation
    The right triangle with legs 11 cm and 18 cm rotate around the longer leg. Calculate the volume and surface area of the formed cone.
  • Pyramid roof
    2/4 of the 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 need to be covered?

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Real numbers - math problems. Area - math problems.