Question

4. One of the offices at the company was being repainted. Riley’s father challenged him to figure out how many quarts of paint would be needed. The dimensions of the office are 16 ft by 12 ft by 10 ft. The office floor, ceiling, and door would not be painted and there are no windows in this office. The door opening measures 3 ft by 8 ft. One quart of paint covers 100 ft2. How many quarts of paint would be needed to paint the room, if only full quarts can be purchased? Show your work.

Answer 1

First , figure out the surface area of the 4 walls of the office. Then, subtract out the door area.

Answer 2

two walls are 12 by 10, and two walls are 16 by 10

Answer 3

The total area of the 4 walls = (2 small wall areas) + (2 larger wall areas) = 2*(12*10) + 2*(16*10)

Answer 4

right?

Answer 5

where you go

Answer 6

560

Answer 7

k, that is the total area of the 4 walls, need to take out the area of the door that will not be painted... what is the area of the door? A= length x width

Answer 8

24

Answer 9

yep,

Area to be painted = Area of 4 walls - Area of the door

Answer 10

536

Answer 11

ok, each quart of paint covers 100 ft^2 of area

Answer 12

\[\frac{ 536 ~ft^2 }{1 }*\frac{ 1~quart~paint }{ 100~ft^2 } = ? ~~Quarts Paint\]

Answer 13

Then round to nearest whole number of quarts, since the problem says, "only full quarts can be purchased"

Answer 14

good?

Answer 15

no

Answer 16

536 divided by 100 = 5.36 quarts of paint needed

The paint only comes in full quarts, so you need to buy 6 quarts

Answer 17

ok

Answer 18

thank u