Planimetrics - math problems

Study plane measurements, including angles, distances, and areas. In other words - measurement and calculation of shapes in the plane. Perimeter and area of plane shapes.

Number of problems found: 2136

  • Center
    circle Calculate the coordinates of the circle center: x2 -4x + y2 +10y +25 = 0
  • Perimeter of square
    stvorec The square has a circumference 17cm. What is its area?
  • Angle
    os_uhla Draw angle |∠ ABC| = 130° and built its axis. What angle is between axis angle and arm of angle?
  • Possible lengths
    triangles Find the most possible lengths for the third side of a triangle with sides 20 and 18.
  • 10 pieces
    circle_div How to divide the circle into 10 parts (geometrically)?
  • Internal angles IST
    licho Determine internal angles of isosceles trapezium ABCD /a, c are the bases/ and if: alpha:gamma = 1:3
  • 9-gon
    9gon Sum of interiol angles of 9-gon is:
  • Hexagon
    sestuholnik Draw a regular hexagon inscribed in a circle with radius r=8 cm. What is its perimeter?
  • Cube - wall
    cubes V kocke ABCDEFGH je ?. Aký je povrch kocky?
  • Cylinder
    valec Calculate the dimensions of rotating cylindrical containers with volume 2 l if the container's height is equal to the base's diameter.
  • Sines
    sines In ▵ ABC, if sin(α)=0.5 and sin(β)=0.6 calculate sin(γ)
  • Circumscription
    circles43 Calculate radius of the Circumscribed circle in the rectangle with sides 20 and 19. It can be rectangle inscribed by circle?
  • Triangle
    trangle_nice Calculate heights of the triangle ABC if sides of the triangle are a=82, b=44, and c=53.
  • Completing square
    eq2 Solve the quadratic equation: m2=4m+20 using completing the square method
  • Quatrefoil
    4listek Calculate area of the quatrefoil which is inscribed in a square with side 6 cm.
  • Pilot
    aircraft-02 How high is the airplane's pilot to see 0.001 of Earth's surface?
  • Trapezium 2
    trapezium Trapezium has an area of 24 square cms. How many different trapeziums can be formed ?
  • Diameter
     circular_plot The diameter of a circular plot is 14 dm. Find the circumference and area.
  • Semicircle
    tales-de-mileto In the semicircle with center S and the diameter AB is constructed equilateral triangle SBC. What is the magnitude of the angle ∠SAC?
  • Trigonometric functions
    trigonom In the right triangle is: ? Find the value of s and c: ? ?

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