In two-dimensional space, a ring can be constructed by using two concentric circles. Determine the area of a ring which has r1 as the inner radius and r2 as the outer radius.
Multiply a column by a row
Add two numbers
05 - Vector Equations 2
07 - Common functions and indexing 5
Kelvin to Celsius
Volume of Spherical Shell
Perimeter of a quadrilateral
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