The floor of a bedroom is 12 feet by 15 feet and the walls are 7 feet high. One gallon of paint covers 450 square feet. How many gallons of paint do you need to paint the walls of the bedroom?
geometry - Ms. Sue, Sunday, May 26, 2013 at 8:58pm
How do you think this problem should be solved?
Remember: there are two walls of one size and two walls of another size.
geometry - Hannah, Sunday, May 26, 2013 at 9:04pm
12x 12 x15x15
geometry - Ms. Sue, Sunday, May 26, 2013 at 9:09pm
No. Picture each wall as a rectangle. Find the area of each wall.
What about the height of the walls?
geometry - Hannah, Sunday, May 26, 2013 at 9:15pm
12 x 15 x 7 =450
would it be 2.8 galloons
geometry - Ms. Sue, Sunday, May 26, 2013 at 9:20pm
Let's start over.
Two walls are 12 feet by 7 feet.
A = 2(12 * 7) = 168 square feet
Two walls are 15 feet by 7 feet.
A = 2 (15 * 7) = 210 square feet
210 + 168 = 378 square feet of walls
It sounds like just one gallon of paint will cover the four walls.