# 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

• Clock hands Calculate the internal angles of a triangle whose vertices lie on the clock's 2, 6 and 11 hours.
• Percitipation - meteo Do you have any tip for calc percitipation on a lnd ? Example on 2 ha falls to 5 mm, how many cubic meters is it?
• Proof PT Can you easily prove Pythagoras theorem using Euclidean theorems? If so, do it.
• Leg and height Solve right triangle with height v = 9.6 m and shorter cathetus b = 17.3 m.
• Proof I When added to the product of two consecutive integers larger one, we get square larger one. Is this true or not?
• Circumference - a simple What is the ratio of the circumference of any circle and its diameter? Write the result as a real number rounded to 2 decimal places.
• Polygon 42 Which polygon has 42 more diagonals than sides?
• Rotary motion Find the orbital time, rotational frequency, and angular rate of the second and minute hands on the watch.
• Pentagon Calculate the area of a regular pentagon, which diagonal is u=16.
• Logs The log has diameter 30 cm. What's largest beam with a rectangular cross-section can carve from it?
• Parallelogram In the parallelogram we know one internal angle 67°33`. Calculate the other internal angles.
• Circle - AG Find the coordinates of circle and its diameter if its equation is: ?
• Compass What angle are between directions WSW (WestSouthWest) and SSE (SouthSouthEast) on the compass?
• Cube diagonal Determine the length of the cube diagonal with edge 37 mm.
• Equation - inverse Solve for x: 7: x = 14: 1000
• Thales Calculate the length of the Thales' circle described to the right triangle with hypotenuse 44.2 cm.
• Circle r,D Calculate the diameter and radius of the circle if it has length 26.59 cm.
• Right Determine angles of the right triangle with the hypotenuse c and legs a, b, if: ?
• Body diagonal Calculate the length of the body diagonal of the 6cm cube.
• Circle - simple Calculate the area of a circle in dm2 if its circumference is 31.4 cm.

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