Question

The ceiling in your house is 9 feet. The floor of a room you want to paint has dimensions of 12' by 16'/ The coverage of the paint will you need to buy if you want to double coat the walls and the ceiling? What will the material cost be, if paint is on sale for $14.95 per gallon down at the local hardware store? How much paint will be left over, if paint is sold only by the gallon?

Answer 1

@TheSmartOne

Answer 2

@shamil98

Answer 3

@dan815 can u help?

Answer 4

@Michele_Laino

Answer 5

hint:
we have to paint the ceiling plus four walls, namely the lateral area plus the ceiling

Answer 6

now, the area of the ceiling is:
12*16=...?

Answer 7

whereas the area of four walls is given by the subsequent computation:
base perimeter * height of room=
=2*(12+16)*9=...?
@katlin95

Answer 8

omg! sorry i didnt get back to u sooner!!

Answer 9

504

Answer 10

@Michele_Laino

Answer 11

ok! the total surface is:
504+192=...?

Answer 12

523

Answer 13

ok!

Answer 14

now, we have to double that quantity, since we have to double coat the ceiling and the walls

Answer 15

ok!

Answer 16

so how would we go about doing that?

Answer 17

the requested quantity, is:
2*(504+192)=2*696=...?

Answer 18

sorry 523 is wong since 504+192=696

Answer 19

wrong*

Answer 20

wait, im confused lol

Answer 21

the surface ceiling plus walls is 12*16+504=696
is it ok?

Answer 22

well, my answer book shows an answer of "need 4 gallons, 0.91 gallons left over

Answer 23

how much surface we can paint using 1 gallon?

Answer 24

namely, we know the area which we have to paint, nevertheless we don't know how many gallons we need

Answer 25

ok!

Answer 26

and I don't know how to compute that number of gallons. Maybe some data are missing in your problem?

Answer 27

ya, the question seems confusing. Ill just move onto the next question:)

Answer 28

I have one big question that I could really use ur help on, coul u help me?

Answer 29

ok!