Question

Find the area of a sector with a central angle of 216 degrees and a radius of 18.4 millimeters and round to the nearest tenth. Help please!

Answer 1

do u know formula \[A=\frac{ 1 }{ 2 } r ^{2} \theta \]

Answer 2

No. I missed a day of class and that was the only day my teacher went over that and I have an assignment on it. :(

Answer 3

dont use the formula i gave u its in radians

Answer 4

Oh okay.

Answer 5

area =\[\pi r ^{2} (\frac{ c }{ 360 })\]

Answer 6

c is the central angle in ur case its 216

Answer 7

\[\pi 18.4^{2} \times \frac{ 216 }{ 360 } =638.1705653 mm ^{2}\]

Answer 8

got it?

Answer 9

So that's the formula I should use?

Answer 10

yes

Answer 11

Awesome, thank you so much!

Answer 12

\[area= \pi r ^{2}\times \frac{ c }{ 360 }\]

Answer 13

no worries :)