# Circle from string

Martin has a long 628 mm string. He makes a circle from it. Calculate the radius of the circle.

x =  99.9 mm

### Step-by-step explanation: Did you find an error or inaccuracy? Feel free to write us. Thank you! #### You need to know the following knowledge to solve this word math problem:

We encourage you to watch this tutorial video on this math problem:

## Related math problems and questions:

• Circle - simple The circumference of a circle is 198 mm. How long in mm is its diameter? Calculate the radius of the circle whose length is 107 cm larger than its diameter
• Athlete How long length run athlete when the track is circular shape of radius 120 meters and an athlete runs five times in the circuit?
• A cylinder A cylinder 108 cm high has a circumference of 24 cm. A string makes exactly 6 complete turns around the cylinder while its two ends touch the top and bottom. (forming a spiral around the cylinder). How long is the string in cm?
• Dividing Divide the three-line segment 13 cm, 26 cm, and 19.5 cm long for parts so that the individual pieces were equally long and longest. How long will the individual parts, and how many will it?
• 22/7 circle Calculate approximately the area of a circle with radius 20 cm. When calculating π, use 22/7.
• 6-gon Perimeter of regular hexagon is 113. Calculate its circumradius (radius of circumscribed circle).
• Four circles 1) Calculate the circle radius if its area is 400 cm square 2) Calculate the radius of the circle whose circumference is 400 cm. 3) Calculate circle circumference if its area is 400 cm square 4) Calculate the circle's area if perimeter 400 cm.
• Shape Plane shape has a maximum area 677 mm2. Calculate its perimeter if perimeter is the smallest possible.
• Tunnel boring How much material did they dig when cutting the 400m long tunnel? The content of the circular segment, which is the cross section of the tunnel is 62m2.
• 2d shape Calculate the content of a shape in which an arbitrary point is not more than 3 cm from the segment AB. The length of the segment AB is 5 cm.
• Circle - easy 2 The circle has a radius 6 cm. Calculate:
• Circle What is the radius of the circle whose perimeter is 10 mm?
• Bicycle wheel After driving 157 m bicycle wheel rotates 100 times. What is the radius of the wheel in cm?
• Line segment The 4 cm long line segment is enlarged in the ratio of 5/2. How many centimeters will measure the new line segment?
• Four prisms Question No. 1: The prism has the dimensions a = 2.5 cm, b = 100 mm, c = 12 cm. What is its volume? a) 3000 cm2 b) 300 cm2 c) 3000 cm3 d) 300 cm3 Question No.2: The prism base is a rhombus with a side length of 30 cm and a height of 27 cm. The height of t
• Arc and segment Calculate the length of circular arc l, area of the circular arc S1 and area of circular segment S2. Radius of the circle is 11 and corresponding angle is (2)/(12) π.