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Monthly Archives: November 2023
AMC 8 2008 Problem 25
Margie’s winning art design is shown. The smallest circle has a radius 2 inches with each successive circle’s radisu increasing by 2 inches. Which of the following is closest to the percent of the design that is black? Insight :The … Continue reading
AMC 8 2007 Problem 23 Shaded region
What is the area of the shaded pinwheel shown in the 5×5 grid ?
AMC 8 2007 Problem 25
On the dart board show in the figure, the outer circle has a radius 6 and the inner circle has a radius 3. Three radii divide each circle into three congruent regions with point values shown. The probability that a … Continue reading
Surface area of the rotating solid (parametric equation)
Find the surface area of the solid rotating about x axis where
Matching polar equations with graph
using desmos
Sumant's 1 page of Math 