Question

math help?

Answer 1

A pizza parlor in Portland sells a pizza with an 18-inch diameter. A pizza parlor in San Anita, Peru, sells a pizza with a 30.6-centimeter diameter.

Part A: How many square inches of pizza is the pizza from Portland? Show every step of your work. (1 point)

Part B: How many square centimeters of pizza is the pizza from San Anita, Peru? Show every step of your work. (1 point)

Part C: If 1 in. = 2.54 cm, which pizza has the larger area? Show every step of your work. (1 point)

Part D: Using the diameter of each pizza, determine the scale factor relationship between the pizzas. (1 point)

Answer 2

So maths, what is it you're having trouble with exactly?

Answer 3

Yeah it is pretty confusing. We have to break it down. Do you know how to do the scale factor on your own or do you need help with that as well?

Answer 4

probably need help with the scale factor too but i understand well when im given a formula

Answer 5

Give me a moment. Are you timed?

Answer 6

nope i got all day

Answer 7

Hopefully we don't take all day because I have to close at work today :)

So you know how to get the square inches of a circle? We're starting with Part A first. You multiply the radius by the radius. What's the radius of the pizza from portland?

Answer 8

It's 9 because you divide 18 by 2

Answer 9

And Peru's radius would be 15.3

Answer 10

15.3 x 9 = 137.7

Answer 11

Well yes but no. We're supposed to be finding the square inches of one pizza not both for Part A. So you multiply 9 by 9 to get?

Answer 12

Oh 81

Answer 13

So for part A your answer is 81 square inches.

Answer 14

great!!

Answer 15

So for Part B it's a bit different. Finding the square inches of a circle is different from finding the square centimeters of one.

Answer 16

Wait, I think ik how to do this one

Answer 17

Im trying to think cuz ive done something similar with it

Answer 18

I'll wait :)

Answer 19

yeah i cant think the wording is so difficult to understand ☠

Answer 20

there is like one shortcut I'm thinking of. If you google, "How to find the square centimeters of a circle", the formula given is Area = pi * radius * radius.

But you could also do this exactly like how you did with square inches and then convert to square centimeters by multiplying your figure by 6.4516. Since there are 6.4516 square centimeters in 1 square inch.

Answer 21

I think the formula sounds way easier, so is it pi x 15.3 x 15.3?

Answer 22

if that's what's half of the diameter then yer

Answer 23

735.4

Answer 24

I rounded that to the nearest tenths btw

Answer 25

does it say to round

Answer 26

uh i dont think so but i dont think my teacher would appreciate it if i typed 735.4154243

Answer 27

LOL Fair point. Moving on! Can just say 734 I think since it's .4 you could round it even further down to make it whole.

Anyways. Part C. Which of the two has a larger area if 1 in = 2.54 cm

Answer 28

LOL yeah I think I might go with portland since square inches are larger than square cm

Answer 29

I suppose you could also convert the cm to inches to be sure.

Answer 30

sure!

Answer 31

oh dang ur right thats 113 square inches

Answer 32

💀

Answer 33

114* when It's rounded

Answer 34

Just to be even MORE sure include the original numbers before you rounded and then include what you rounded to. Since it seems like a graded assignment, that way it's harder to just say you're wrong. Just in case yk.

Answer 35

yupp i will

Answer 36

so then

Answer 37

would i divide 114 by 2.54?

Answer 38

Was 114 what you got when you converted it to square inches or? And for which pizza?

Answer 39

it was for san anita and yeah its what i got when i converted it to square in

Answer 40

if they're both square inches there's no need to divide.

Answer 41

or multiply

Answer 42

it was 735 square cm before i converted it

Answer 43

just compare and see what's the bigger nuuuuumber

Answer 44

OH

Answer 45

as square inches though not centimeters

Answer 46

yeah its def san anita

Answer 47

Bet. Put that in.

Answer 48

im like trying to function with 4 hours of sleep so hard 💀

Answer 49

Part D: Using the diameter of each pizza, determine the scale factor relationship between the pizzas.

You should sleep more.

Answer 50

ill sleep when i finish all my assignments next week

Answer 51

Felt that. You know how to do scale factor?

Answer 52

def not its mad confusing 💀💀

Answer 53

im def gonna need to write some notes next time

Answer 54

One moment then. I admit I wasn't in class for these lessons.

Answer 55

💀