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numbers and algebraic expressions
logic, sets, intervals
absolute value
function and its properties
linear function
quadratic function
polynomials
rational function
exponential function
logarithm
number sequences
limits of sequences and functions
derivative and integral of functions
trigonometry
plane geometry
analytic geometry
solid geometry
combinatorics
probability
elements of statistics
kropki game
mathinschool.com
An area of a circle rotated about its diameter produces a ball. The surface of a ball is the sphere which area can find from formula: P = 4πR^2. The volume of a ball: V = (4/3)πR^3. Any cross section through a ball is area of a circle.