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What is the circumference of a circle whose diameter is 200 m?
The diameter times pi. Pi is approximately 3.1416. Scientific calculators also have a button to quickly access the value pi.
If a circle has a radius of 100 miles what is the diameter?
Its diameter will be: 2*100 = 200 miles
If the radius of a circle is 100 cm then the diameter of the circle is how many meters?
2 meters
What is the circumference of a circle circumscribed about a square with a perimeter of 40?
Assuming you mean that the circle is touching all 4 corners of the square: If the perimeter of the square is 40, then each side of the square is 10 (40/4=10). You could find the diameter of the circle by breaking the square up into 2 triangles, drawing a diagonal line through the square. Using pythagorean's theory (a^2+b^2=c^2), we know legs 2 and b (they are each one side of the square, so: (10^2+10^2=c^2). 10^2 is 100, therefore it is (100+100=c^2). (200=c^2) (√200=c) and the √ of 200 is about 14.142, meaning that the diameter of the circle is √200, which is the same as 10√2, (or approximately 14.142). You multiply the diameter of a circle by pi to get the circumference of a circle. Therefore, the exact answer is (10√2)(π), which would be approximated at 44.42882938158366247015880990 units, where π is pi.
There are two mathematically similar cylinders The smaller of the two has a diameter of 5 cm and a volume of 100 cm The larger has a diameter of 10 cm What is it's volume?
200
