# 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

Calculate the coordinates of the circle center: x^{2}-4x + y^{2}+10y +25 = 0 - Perimeter of square

The square has a circumference 17cm. What is its area? - Angle

Draw angle |∠ ABC| = 130° and built its axis. What angle is between axis angle and arm of angle? - Possible lengths

Find the most possible lengths for the third side of a triangle with sides 20 and 18. - 10 pieces

How to divide the circle into 10 parts (geometrically)? - Internal angles IST

Determine internal angles of isosceles trapezium ABCD /a, c are the bases/ and if: alpha:gamma = 1:3 - 9-gon

Sum of interiol angles of 9-gon is: - Hexagon

Draw a regular hexagon inscribed in a circle with radius r=8 cm. What is its perimeter? - Cube - wall

V kocke ABCDEFGH je ?. Aký je povrch kocky? - Cylinder

Calculate the dimensions of rotating cylindrical containers with volume 2 l if the container's height is equal to the base's diameter. - Sines

In ▵ ABC, if sin(α)=0.5 and sin(β)=0.6 calculate sin(γ) - Circumscription

Calculate radius of the Circumscribed circle in the rectangle with sides 20 and 19. It can be rectangle inscribed by circle? - Triangle

Calculate heights of the triangle ABC if sides of the triangle are a=82, b=44, and c=53. - Completing square

Solve the quadratic equation: m^{2}=4m+20 using completing the square method - Quatrefoil

Calculate area of the quatrefoil which is inscribed in a square with side 6 cm. - Pilot

How high is the airplane's pilot to see 0.001 of Earth's surface? - Trapezium 2

Trapezium has an area of 24 square cms. How many different trapeziums can be formed ? - Diameter

The diameter of a circular plot is 14 dm. Find the circumference and area. - Semicircle

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

In the right triangle is: ? Find the value of s and c: ? ?

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