Planimetrics - math problemsStudy 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: 2080
- Rectangular trapezoid
How many inner right angles have a rectangular trapezoid?
- 3-bracket 2
May be the smallest angle in the triangle greater than 70°?
Calculate the length of a semicircle with a radius of 6cm.
- Goniometric form
Determine the goniometric form of a complex number ?.
In right triangle ABC with right angle at C is given side a=29 and height v=17. Calculate the perimeter of the triangle.
If tg α = 9.6, Calculating sin α, cos α, cotg α .
- Vector 7
Given vector OA(12,16) and vector OB(4,1). Find vector AB and vector |A|.
Calculate the square area if its perimeter is 14dm.
- Adding shapes
5 triangles + 1 square = how many sides in all
Calculate the area of a circle whose radius is 5 dm.
Side of the square is a = 6.2 cm, how long is its diagonal?
- Annular area
The square with side a = 1 is inscribed and circumscribed by circles. Find the annular area.
Calculate perimeter of the rectangle with sides a=2.4 m and b=1.9 m.
- The square
Calculate the area and perimeter of a square with side a = 15 dm S =, O =
May be the largest angle in the triangle less than 20°?
On the circle k with diameter |MN| = 61 J lies point J. Line |MJ|=22. Calculate the length of a segment JN.
What is the distance between the origin and the point (18; 22)?
How long is trajectory of second hand of hours for day, if is 15 mm long?
- Tree trunk
Calculate the average tree trunk with a circumference of 149 cm.
How probable is a randomly selected three-digit number divisible by five or seven?