Circle - practice for 11 year olds - page 5 of 7
Number of problems found: 138
- Bike wheel
The bike wheel has a radius of 30cm. How often does it turn if we go on a 471m bike? - Motorcyclist 38781
The front wheel of the motorcycle turned 800 times while riding. What distance did the motorcyclist walk if the diameter of the front wheel was 50 cm? - Clocks
How long does the track travel the second hand of a clock in 30 hours, which is 4 cm long? - The crane
The construction crane has a 20m long arm. What construction area in ares can it handle from this crane if it rotates around its axis?
- A bicycle
A bicycle wheel has a diameter of 63 cm. Calculate how many times the wheel turns round in traveling 19.8 km. - Pulley
On wheels with a diameter of 40 cm is fixed rope with the load. Calculate how far the load is lifted when the wheel turns seven times. - Wheel turns
The diameter of the motorcycle wheel is 55 cm. How often does a motorcycle wheel turn on a 5 km long road? - Diameter 6348
How many m did a wheel with a diameter of 22dm pass if it stopped after 30 turns? - Sprinkler 48513
The rotary sprinkler has a spray of 20 m. What area of land can it irrigate from one place?
- Determine 19953
The distance between the tip of the minute hand and the center of the dial is 12 mm. Determine the distance traveled by the tip in 45 min. (draw a clock face and a minute hand and realize the distance it will cover in 45 min.) - Half-circles 81731
A skier skis down a black slope. He makes a total of 31 half-circles while going down the hill. The radius of one semicircle is 4m. What distance did he travel? - Athlete
How long length an athlete run when the track is a circular shape radius of 120 meters, and an athlete runs five times in the circuit? - Competitor 27141
The competitor runs on a circular track with a radius of 86 m. How many meters will he run three circuits? - Diameter 46141
The road roller has a diameter of 1.4 m and a length of 160 cm (a) how many square meters the road rolls when it turns 95 times b) how many times does it turn when rolling a 3 km-long section
- Diameter
The diameter of a circular plot is 14 dm. Find the circumference and area. - Cylinder's 83288
Calculate the radius of the cylinder's base if its volume is equal to 12.56 cm². - Kilometers 31211
The road roller has a base diameter of 1.2 m and a length of 180 cm. a) how many times did he turn on the road when he walked 2 km during work? b) what is the largest area it can cover if it turns 1000 times? c) how many kilometers will he travel if he co - Winch drum
Originally an empty winch drum with a diameter of 20 cm and a width of 30 cm on the rescue car, he started winding a rope with a thickness of 1 cm from edge to edge. The winch stopped after 80 turns. It remains to spin 3.54m of rope (without hook). How lo - Clock Tower
What angle is between hands-on Clock Tower when it shows 17 hours and 35 minutes?
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