1 Answer

Roaring Stones · Answer 1 · 2019-01-17T22:30:34+0000

the area of the blue region is equal to :

area of the circle - area of the triangle

the area of the circle is 28.26

$(3 * 3) * 3.14 = 9 * 3.14 \\ = 28.26$

the area of the triangle is 9.45

$((1.1 + 3.4) * 4.2) / 2 \\ = (4.5 * 4.2) / 2 = 18.9 / 2 \\ 9.45$

so the area of the blue region is

28.26 - 9.45 = 18.81

the final answer is 18.81

good luck

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