Question

MEDAL FOR BEST ANSWER

Find the area of a sector with a central angle of 110° and a diameter of 5.2 cm. Round to the nearest tenth.

Answer 1

radius = 2.6 cm.
central angle = 110 which is 0.3055555556 of a circle (110/360)
so sector area =
PI*r² * (110/360)

Answer 2

where does the Pl come from and the radi is half of 5.2 right?

Answer 3

yes radius = 1/2 diameter

Answer 4

Are you familiar with PI at all?

Answer 5

no... teach didnt teach that

Answer 6

PI is involved with all kinds of formulas dealing with circles and spheres.
For example if a circle has a diameter of 10, what is the circumference?

Answer 7

PI = 3.14159265

Answer 8

oooh pi i thought that was some technicality derp...

Answer 9

so circumference = PI * diameter = 2 * radius * PI

Answer 10

so i got 2.4958 but thats not one my answer choices

Answer 11

the answer should be 6.5

Answer 12

So I guess you are talking about PI * r² for the sector, right?

Answer 13

i think so

Answer 14

So, can you calculate PI*r² * (110/360)?

Answer 15

oh i got it ! I made an error. Forgot to square the radi

Answer 16

Okay then you've got it.