Question

Part II,

Answer 1

@welshfella

@FibonacciChick666

Answer 2

ffffffor this you want the area of the top + area of the sides for each pan

Answer 3

in the case of the rectangular dish its the area of the top + 2*area of small sides + 2* area of large sides

Answer 4

for the round cake its the area of the top (pi r^2) + area of round side ( pi * diameter* depth)

Answer 5

ok

Answer 6

for the rectangle pan
SA = 9*6 + 2*9*2+ 2*6*2

Do you follow that?

Answer 7

so, 54+ 36+24 = 114?

Answer 8

(for the rectangular pan)

Answer 9

I think I need help on the SA of the cylinder pan, @welshfella . can you clarify that and done?

Answer 10

@MissSmartiez : Please share, all in one place, what you've done so far.
What is the radius of the circular pan?
What is the area of the dircular pan?
What is the depth of that pan?
What ist he volume of that pan?

What is the bottom area of the 6 by 9 rectangular pan?
What is the depth of this pan?
What is the volume of this pan?

Completing this will help you and the rest of us know where to focus.

Answer 11

We know where to focus, we did part 1 together, the people I've contact know.

Answer 12

Are you going to frost the sides of your cake(s), or only the top(s)?

Answer 13

I think the pans.

Answer 14

So for your mind's eye to think of what we do and why for surface area. Imagine you were making a paper friendship bracelet in kindergarten.

Answer 15

You started out with a long skinny rectangle and taped it to form a bracelet. That is the same idea here with the cylinder

Answer 16

"I think the pans." But I thought we were to frost the cake(s).

Are we going to frost only the tops of the cakes, or the tops and sides?

Answer 17

oh, well, yes I guess I imagine?

Answer 18

tops and sides are to be frosted

Answer 19

It says in the question. So anyways, we need to figure out the height of our rectangle. Any ideas?

Answer 20

OK. Let's follow welshfella's suggestion and frost everything but the bottoms of the cakes.

What is the area of the rectangular cake's top? of its two longer sides? of its two ends?

Answer 21

We found the rectangle, I need the cylinder, hold on, groceries, but yeah,

Answer 22

Ah, so I mean the rectangle formed by cutting the cylinder. For instance if you were to cut the top and bottom off of a can of coke, you would have a cylinder yea? Now make a straight cut through the cylinder from bottom to top. You could lay that out flat and you'd have a rectangle

Answer 23

That rectangle would have a length that is the same as the circumference of the circle that forms the lid right?

Answer 24

yes, back @FibonacciChick666

Answer 25

ok, so to find the SA of the cylinder, you need to add the area of the top, the area of the rectangle that makes up the rounded part, and (though not in this case) the area of the bottom. So since we are not frosting the bottom, we can skip that part

Answer 26

so what's the area of the top of the cylinder?