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03-03-2019
Mathematics

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Please help for one easy geometry question. PLEASE

Please help for one easy geometry question PLEASE class=

Respuesta :

plasmafrequency plasmafrequency

03-03-2019

Answer:

40pi

Step-by-step explanation:

Area of a circle: [tex]A = \pi r^2[/tex]

Shaded area: 2*72° = 144°, which is 0,4 of the total area. (144°/360° = 0,4)

r = 10, according to your picture

-> [tex]A = \pi \cdot 10^2 \cdot 0,4 = 40 \pi[/tex]

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