The 2024 high school graduation test exam in Mathematics of the Department of Education and Training of Quang Binh province includes 05 pages updated below.
High school graduation test 2024 Math – Quang Binh Department of Education
Question 45: From rectangle ABCD, length 4B = 10cm and width BC = 5cm; We cut off the region (R) limited by side CD of the rectangle and the two semi-parabolas that have a common midpoint of side AB, which in turn pass through the two endpoints C and D of that rectangle (part bold as shown). The remaining part is rotated around axis AB to create a decorative object, the volume of which is equal to
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