tiles wide, Find the number of tiles that touch the walls of the room?
2007-10-04 13:37:48 · 11 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
2(L+W) = 2(9+5) = 28
but since 4 corner tiles are common to lenght and width, you just count them once
28-4
ans: 24 tiles
hope this helps
2007-10-04 13:41:41 · answer #1 · answered by soul_burner_29 2 · 0⤊ 0⤋
Because the corner tiles are the same for the width/height, you can only count them for one of the sides. Thus:
# wall tiles = (# tiles in height x 2) + ((# tiles in width - 2) x 2)
# wall tiles = (9 x 2) + ((5 - 2) x 2)
# wall tiles = (9 x 2) + (3 x 2)
# wall tiles = 18 + 6
# wall tiles = 24
2007-10-04 13:44:18 · answer #2 · answered by Scott M 3 · 0⤊ 0⤋
All they really want is the length around the edges of the rectangle. Since it is 9X5 you would take 9+9+5+5. 9+9 because the two long sides are nine tiles each and 5+5 because the two short sides are 5 tiles each. So the answer would be 28
I stand corrected. It would be 24 for the reasons stated above.
2007-10-04 13:43:30 · answer #3 · answered by Kay3535 4 · 0⤊ 0⤋
You would take the perimeter, which is 2(9)+2(5)= 28 tiles that touch the walls. The area is 45 tiles.
2007-10-04 13:42:52 · answer #4 · answered by lawrencekliu7 2 · 0⤊ 1⤋
24
2007-10-04 13:42:40 · answer #5 · answered by Thomas E 7 · 0⤊ 0⤋
24
2007-10-04 13:42:34 · answer #6 · answered by Anonymous · 0⤊ 0⤋
24
2007-10-04 13:41:46 · answer #7 · answered by Anonymous · 0⤊ 0⤋
24 tiles
2007-10-04 13:40:51 · answer #8 · answered by Hayden M 2 · 0⤊ 0⤋
you are finding the perimeter so you add up all the sides.
9+9+5+5=28
but you are double counting the corners so you have to subtract 4
24 tiles
2007-10-04 13:45:43 · answer #9 · answered by sarah 2 · 0⤊ 0⤋
length X width = area area = 928 length = 32 928/32 = width width = 29 tiles
2016-05-21 02:12:37 · answer #10 · answered by Anonymous · 0⤊ 0⤋