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Question-58928




Question Number 58928 by mr W last updated on 01/May/19
Commented by mr W last updated on 01/May/19
Find area of red.
$${Find}\:{area}\:{of}\:{red}. \\ $$
Commented by MJS last updated on 01/May/19
calculating the intersections and integrals  I get 25(π−1−(1/2)arcsin (4/5) −2arcsin (3/5))≈9.77357
$$\mathrm{calculating}\:\mathrm{the}\:\mathrm{intersections}\:\mathrm{and}\:\mathrm{integrals} \\ $$$$\mathrm{I}\:\mathrm{get}\:\mathrm{25}\left(\pi−\mathrm{1}−\frac{\mathrm{1}}{\mathrm{2}}\mathrm{arcsin}\:\frac{\mathrm{4}}{\mathrm{5}}\:−\mathrm{2arcsin}\:\frac{\mathrm{3}}{\mathrm{5}}\right)\approx\mathrm{9}.\mathrm{77357} \\ $$

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