How do I find the area for the shaded area?

Question

How do I find the area shaded in red? The difficulty is actually in finding the area in blue.

Duplicate of (https://www.quora.com/What-is-the-area-of-the-shaded-part) — Jean Marie, Apr 28 '17 at 12:26
With a little integral calculus the blue part is not that problematic to calculate, imo.: $$\int_0^2\frac x2,dx+\int_2^5\left(\sqrt{10x-x^2}+5\right)dx\ldots$$ — DonAntonio, Apr 28 '17 at 12:45
Duplicate of "Any smart ideas on finding the area of this shaded region?". — Blue, Apr 29 '17 at 02:24

score 2 · Accepted Answer · answered Apr 28 '17 at 13:08

2

Here is a video on youtube where a guy solves exctly this problem: https://www.youtube.com/watch?v=xnE_sO7PbBs&t=2s

answered Apr 28 '17 at 13:08

Parseval

1 Answers1