Question

Calculate the area of the shaded sector in inches.

A. 5.5 in2
B. 1.09 in2
C. 4.26 in2
D. 8.5 in2

Answer 1

12.5 is the diameter or radius?

Answer 2

i'm not sure , that's what the image showed of the one i posted . i'm confused on this stuff .

Answer 3

Area of the circle is (pi)(r^2), so the area of the sector (the shaded portion) is (25/360) of that.

Answer 4

For sectors, use this rule: \[\frac{ sector \angle }{ total \angle }\times area of circle\]

Answer 5

sector angle is 25 and the total angle of a circle is 360 multiplied with the area of the circle. Did you understand?

Answer 6

So, (pi)(r^2)(25/360) because you have a ratio of the shaded area to the whole circle.

Answer 7

i don't have a calculator with me to do that . i can't find the one i'd use anywhere that has all of that stuff on it . so no i'm still confused . /: i'm sorry

Answer 8

You can call up a calculator from your computer under 'accessories"

Answer 9

like with the pi stuff and all that .

Answer 10

If you are using Windows, the calculator can be switched to Scientific view and that has pi on it.

Answer 11

\[\frac{ 25 }{ 360 } \times \pi \times (6.25)^{2}\] type this in to the calculator

Answer 12

i got 565.2

Answer 13

is there an easier way to put this into a calculator on the computer considering it doesn't have a pi sign or anything like that?

Answer 14

Yes, all your answers are to hundredths, so you can use 3.14 for pi and that will be good enough.

Answer 15

could you show me how i would put this into the calculator please ?

Answer 16

I would type in 6.25 x 6.25 x 3.14 x 25 / 360. It's backwards, but it makes the squaring a bit clearer.

Answer 17

And usingthat value for pi gives a good answer from your list.

Answer 18

so my answer would be 8.5in^2

Answer 19

Excellent! Nice job!

Answer 20

Thank you very much ! (:

Answer 21

You're quite welcome! Nice working with you!