I would like to calculate the red marked area . How to do it? with steps?
2026-03-28 02:49:43.1774666183
Calculating area of a rectangle strip
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One approach, which looks promising here, is to decompose the area into the sum and difference of shapes you can compute the area of. I see a circular segment inside another with another cut out, then cut in half. I can't read the dimensions of your figure. Trace it on graph paper and count squares is another simple technique.