# Unit conversion + circle - math problems

#### Number of problems found: 78

• Decagon Calculate the area and circumference of the regular decagon when its radius of a circle circumscribing is R = 1m
• Annulus from triangle Calculate the content of the area bounded by a circle circumscribed and a circle inscribed by a triangle with sides a = 25mm, b = 29mm, c = 36mm
• Central angle What is the length of the arc of a circle with a diameter of 46 cm, which belongs to a central angle of 30°?
• Base Base of building is circle with diameter 25 m. Calculate the circumference of a circular trench witch diameter is 41 cm wider than the diameter of the base.
• Circle arc Calculate the circular arc area in m2 where the diameter is 263 dm, and a central angle is 40°. Result round to three decimal places.
• Clock How long is trajectory of second hand of hours for day, if is 15 mm long?
• Rotaty motion What is the minimum speed and frequency that we need to rotate with water can in a vertical plane along a circle with a radius of 70 cm to prevent water from spilling?
• Wheel What is the wheel diameter if on the 0.57 km track turns 106 times?
• Compass What angle are between directions WSW (WestSouthWest) and SSE (SouthSouthEast) on the compass?
• Constant Angular Acceleration The particle began to move from rest along a circle with a constant angular acceleration. After five cycles (n = 5), its angular velocity reached the value ω = 12 rad/s. Calculate the magnitude of the angular acceleration ε of this motion and the time int
• Rectangle The rectangle is 21 cm long and 38 cm wide. Determine the radius of the circle circumscribing rectangle.
• RPM An electric motor makes 3,000 revolutions per minutes. How many degrees does it rotate in one second?
• Earth parallel Earth's radius is 6370 km long. Calculate the length parallel of latitude 50°.
• Circular pool The base of the pool is a circle with a radius r = 10 m, excluding a circular segment that determines the chord length 10 meters. The pool depth is h = 2m. How many hectoliters of water can fit into the pool?
• Clocks The length of the minute hand is 12 cm. What track in meters will its end point describe in a week?
• The central The central angle of a sector is 30° and the radius is 15 m. Determine its perimeter.
• Clock How many times a day hands on a clock overlap?
• A bicycle A bicycle wheel has a diameter of 63 cm. Calculate how many times the wheel turns round in travelling 19.8 km .
• Around Around the circular flowerbed with a radius of 2 m is a sidewalk 80 cm wide. How many square meters does the sidewalk have?
• Wheel Diameter of motocycle wheel is 52 cm. How many times rotates wheel on roand long 2 km?

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Unit conversion - math problems. Circle Problems.