A cylinder H cm high has a circumference of C cm. A string makes exactly N complete turns round the cylinder while its two ends touch the cylinder's top and bottom. How long is the string in cm?
Solve the set of simultaneous linear equations
Multiply a column by a row
Given area find sides
Sum the numbers on the main diagonal
Is the input divisible by 3?
center of mass
Slicing the cube
rectangle in circle
How many rectangles in a grid ?
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