I want to find the square feet of 216 feet by 9 inches. Do I divide 9 by 12 and then multiply the fraction decimal by the 216?
2006-08-09 03:27:02 · 7 answers · asked by duck_man_57 1 in Science & Mathematics ➔ Mathematics
Convert both measurements to feet so that you have:
216 x 3/4 (since 9 inches is three quarters of a foot)
= 162 square feet
2006-08-09 03:32:24 · answer #1 · answered by Owlwings 7 · 0⤊ 0⤋
Yes.
You have to convert the feet to inches or convert the inches to feet.
so either multiply 216' x 12" ---- OR
you can divide too 9" / 12"
The way you do it means you have to work with fractions.
9/12=3/4
3/4*216=
3*216/4=
3*108/2=
3*54=162ft²
The other way to do it is multiplying.
216*12=2160+432=2592
2592*9=18000+4500+810+18=
22500+828=23328in²
now you have to divide again to convert back to square feet. This makes the method harder with the last division.
23328"/12"/12"=11664/6/12"=
5832/3/12"=1944/12"=972/6=
324/2=162ft²
As you can see your method is shorter!
Just remember if you want to end up with feet, start with feet. If you want to end up with inches, start with inches.
2006-08-09 03:30:32 · answer #2 · answered by Victor C 3 · 0⤊ 0⤋
Yes.
216 feet * (9/12) feet = 162 sqft
2006-08-09 03:30:57 · answer #3 · answered by jimvalentinojr 6 · 0⤊ 0⤋
Yes, that's exactly how you would do it.
If you put 9 inches into a decimal form, it would be equal to .75 feet.
so 216 x .75 = 162 sq feet
2006-08-09 03:31:01 · answer #4 · answered by Steven B 6 · 0⤊ 0⤋
162 SF
2006-08-09 03:31:20 · answer #5 · answered by Anonymous · 0⤊ 0⤋
yes its 162 squarefeet
2006-08-09 03:47:57 · answer #6 · answered by harshita 2 · 0⤊ 0⤋
Yes.
Thanks for answering your own question.
2006-08-09 03:40:50 · answer #7 · answered by Anonymous · 0⤊ 0⤋