Question

Which of the following is a situation where finding the surface area would be appropriate?
Determining how much stucco is needed to stucco the walls and roof of a building.

Determining how much paint is needed to entirely paint a pyramid-shaped ornament.

Determining how much water is needed to fill a rectangular tank.

Determining how much paint is needed to paint the walls of your bedroom.

Answer 1

Any ideas?

Answer 2

the last one?

Answer 3

Well that does involve surface area...but...notice how the floor and ceiling are left out. So we're not finding the surface area of the entire geometric figure.

Answer 4

If we wanted the lateral surface area, then the last choice would be appropriate.

Answer 5

the first one?

Answer 6

what's missing in that first choice?

Answer 7

We have the walls and the roof, but something is missing...

Answer 8

the floor

Answer 9

yes, so that's out

Answer 10

because we're not talking about the entire figure

Answer 11

and one of those choices are completely out because it's talking about volume and not surface area

Answer 12

which is c

Answer 13

so the answer is b?

Answer 14

yes choice C is talking about volume, so B is the answer

Answer 15

and notice how we're talking about the ENTIRE object in choice B

Answer 16

and we're not leaving any face out

Answer 17

ok! I just had this question up before and someone said it wasn't B so i wasn't sure

Answer 18

which one did they say?

Answer 19

they didn't know

Answer 20

i gotcha