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Mathematics 9 Online
OpenStudy (anonymous):

What is the area of the sector, in square units, determined by an arc with a measure 80° in a circle with radius 10?

OpenStudy (anonymous):

@satellite73

OpenStudy (anonymous):

@jim_thompson5910

jimthompson5910 (jim_thompson5910):

What's the area of the entire circle?

OpenStudy (anonymous):

I don't know.

jimthompson5910 (jim_thompson5910):

use the formula A = pi*r^2

OpenStudy (anonymous):

314.15

jimthompson5910 (jim_thompson5910):

approximately, yes

jimthompson5910 (jim_thompson5910):

then you multiply that by 80/360 to get the portion that you want (ie the slice)

jimthompson5910 (jim_thompson5910):

This slice here |dw:1404264097817:dw|

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