# MATH

posted by .

I am trying to figure out how to work this problem and need help.
Q How many 2X6 pieces of 16 ft x 5 1/2 ins. for a porch that measures 16ft x 14ft?
I changed the mixed number to an improper fraction (11/2) and found the area (224).
11/2 x 224/1

• MATH -

Since your porch is 16 ft long and each of the 2by6's is also 16 feet long, all you have to care about is how many are neeedd side by side to go 14 feet
14 feet = 168 inches
so number of pieces to fit sideways = 168/5.5 = 30.5

Problem I see, ..
Usually a space is left between adjoining pieces of lumber , you do not say how much that space is.
The above solution implies that we leave no space, which is not advisable.
Anyway, according to the above math, you would need 31 pieces, having to cut the last piece.

## Similar Questions

1. ### Geometry

42x25 rectangular roof(one side) We need to fill this roof with 8x4 plywood pieces. So, we need about 33 plywood pieces to fill one side roof. How do I show a possible arrangement of pieces on half of the roof. Make a few cuts. What …
2. ### Math - Complex Numbers

Could someone show me how to get the work for: 3/4 (sqrt)-16/25 ?
3. ### Math

Ha! Mom said if I could find help online to go for it so here I am asking for your help. Here is one problem she gave me from a page called Superstars. Mr. Jackson is preparing bags of treats to give trick or treaters. He has 48 pieces …
4. ### Math

I am trying to help my son in Algebra, the only thing is that I have forgot some of these thing.He has a word problem I can not figure it out please help a mother help her 9th grader. Q- The polygons below are similar. Find the unknown …
5. ### MATH

NEED HELP WITH SUMMATION NOTATIONS TOP NUMBERIS 6 OVER A SIDEWAYS Z BOTTOM NUMBER IS A N=2 THAN THERE IS (2N-1) NEED TO KNOW HOW TO WORK THIS PROBLEM. i AM TRYING TO HELP MY SON WITH HIS HOMEWORK
6. ### Algebra

I am trying to figure out how to evaluate 100^-3/2. I'm going by the example (64)^2/3=16. IN the example, 64^2/3 is changed into 64^1/3^2=4^2=16. But I don't get why out of all numbers it is changed into 4^2. I know 16 goes into 64 …
7. ### Algebra

I am having such a hard time in this class. Hopefully someone here can help me to understand some of what they are trying to teach me. I have a problem here and have been working on it for about an hour now and I can not figure it …
8. ### Math

Ok I need help to figure out how to solve this problem 4 working move into town looking for work. A local business offers them 200 hours of work. The catch is, they have to work the same number of hours as they do days. I.E. if they …
9. ### Math

How do you figure this problem out I am trying to help my son with his homework but can't figure out how to solve problem. 18+9x(5+4)divide 3-5