OpenStudy (anonymous):

Can someone please tell me how to find the area of one slice of pizza if my pizza is 12” in diameter and has 12 slices?

5 years ago
hartnn (hartnn):

can u find area of circle when diameter is given ?

5 years ago
OpenStudy (anonymous):

I just don't know what to do, no.

5 years ago
hartnn (hartnn):

can u find radius when diameter is given ?

5 years ago
hartnn (hartnn):

no ?

5 years ago
OpenStudy (anonymous):

No? Can you just show me the steps?

5 years ago
OpenStudy (anonymous):

I know you do: Interior angle = 360°/12 = 30° Arc length = a/360°(πd)

5 years ago
OpenStudy (anonymous):

but then i'm stuck

5 years ago
hartnn (hartnn):

yes, radius = diameter /2 = 12/2 = 6

5 years ago
hartnn (hartnn):

first we can find area of circle, then divide it by 12

5 years ago
hartnn (hartnn):

area of circle = pi * r^2

5 years ago
hartnn (hartnn):

area of slice = pi * r^2/12 r= 6

5 years ago
OpenStudy (anonymous):

i'm confused, okay. i'm sorry, i need to find the interior angle and arc length of the slices AND the area of each slice. if my pizza is 12" in diameter and has 12 slices.

5 years ago
OpenStudy (anonymous):

Area = π(r)2 so pizza area = 3.14*6*6 = 113.04 inch sq for 12 the part = 113.04/12 = 9.42 sq in

5 years ago
OpenStudy (anonymous):

piz·za [ptsə] (plural piz·zas) noun baked dough topped with cheese: a flat round piece of bread dough baked with a variety of toppings, often including tomato sauce and cheese [Late 19th century. < Italian, "pie"]

5 years ago
OpenStudy (anonymous):

Okay so 9.42 sq inch per slice but now i need to find the interior angle and arc length of each slice..

5 years ago
hartnn (hartnn):

arc length of circle = ? then just divide it by 12 your interior angle = 30 is correct

5 years ago
hartnn (hartnn):

so arc length of slice = r*360/12 r= radius

5 years ago
OpenStudy (anonymous):

the angle will be 360/12 = 30 degree the arc length also easy as $2 \pi r$ = 2*3.14*6 = 37.68 inch so for this 12th part will be 37.68/12 = 3.14 inch only

5 years ago
OpenStudy (anonymous):

okay i was doing this: interior angle = 360°/12 = 30° arc length = 30°/360° (π • 12) arc length = 0.0833333333333333 (π • 12) can you tell me what i was doing wrong or what i need to do ahhh

5 years ago
OpenStudy (anonymous):

see above then u can understand or do some drawing in rough book

5 years ago
OpenStudy (anonymous):

i did look above and it just makes me confused, can you please tell me straight out what i have to do left? i'm sorry :(

5 years ago
hartnn (hartnn):

u did nothing wrong, arc length = 0.0833333333333333 (π • 12)=3.1414 inch which is correct

5 years ago
hartnn (hartnn):

got this? from arc length , u want area ?

5 years ago
OpenStudy (anonymous):

yeah what's the next step?

5 years ago
OpenStudy (anonymous):

ohh i see i see

5 years ago
hartnn (hartnn):

to get area from arc length , u multiply it by (r/2) here r=6

5 years ago
OpenStudy (anonymous):

So this is interior angle and arc length of each slice: interior angle = 360°/12 = 30° arc length = 30°/360° (π • 12) arc length = 0.0833333333333333 (π • 12) = 3.1414 inch

5 years ago
hartnn (hartnn):

yes..

5 years ago
OpenStudy (anonymous):

thank you so much oh gosh you've been a great help really, both of you

5 years ago
hartnn (hartnn):

welcome ^_^

5 years ago