Planimetrics + angle - practice problems - page 3 of 45
Number of problems found: 885
- 6-gon
The perimeter of a regular hexagon is 113. Calculate its circumradius (radius of a circumscribed circle). - Meridian
What is the distance (length) of the Earth's meridian 15° when the radius of the Earth is 6370 km? - Equilateral triangle v2
An equilateral triangle has a perimeter 36 dm. What is its area? - 4-gon
Is it true that a 4-gon whose two sides are parallel and the other two have equal length is a parallelogram?
- Calculate 81590
Calculate the central angle if r = 72 cm and the arc length is 12.4 cm. - Length of the arc
What is the arc length of a circle k (S, r=68mm), which belongs to a central angle of 78°? - O'clock 66554
What is the angle of the hour and minute hands on the clock of the old tower if it is exactly eight o'clock? - The central
The central angle of a sector is 30°, and the radius is 15 m. Determine its perimeter. - Central angle
The circle has a diameter of 46 cm. What is the arc length corresponds to a central angle of 30°?
- Bisectors
As shown, in △ ABC, ∠C = 90°, AD bisects ∠BAC, DE⊥AB to E, BE = 2, BC = 6. Find the perimeter of triangle △ BDE. - Angles
The outer angle of the triangle ABC at vertex A is 113°36'. The outer angle at vertex B is 119°54'. What size is the internal angle at vertex C? - Calculate 25621
Calculate the area of a regular hexagon inscribed in a circle with a radius r = 7 cm. - 45-degree 17861
The ant looks at a 45-degree angle at the top of the tree, 15 m away from the tree. How tall is the tree? - Right angle
If a, b and c are two sides of a triangle ABC, a right angle in A, find the value on each missing side. If b=10, c=6
- Coal mine
The towing wheel has a diameter of 1.7 meters. How many meters does the elevator cage lower when the wheel turns 32 times? - Calculate 6687
Calculate the sizes of the remaining inner and outer angles. Alpha with comma α '= 140 ° and beta with comma β' = 100 °. - Five-gon
Calculate the side a, the circumference, and the area of the regular 5-angle if Rop = 6cm. - Rhombus angles
If one angle in the rhombus is 137.6°, what is its neighboring angle in the rhombus? - Circumference 81778
Points A and B lie on the circle k. The circumference of the circle k is 40 CM, and the length of the circular arc AB is 10 CM. Determine the size of the angle ABS.
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