A rectangular wall is 12.0 metres long and 2.5 metres high. it has a rectangular window that is 1.2 metres wide and 1.4 metres high. To the nearest tenth of a square metre, what is the area of the wall(not including the window)???
2007-06-03 08:22:52 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Multiply the length and height of the wall to get its toal area. Multiply the width and height of the window to get its area. Subtract the area of the window from the area of the wall to get the non-window area.
2007-06-03 08:27:19 · answer #1 · answered by DavidK93 7 · 0⤊ 0⤋
you multiply length times width to get the area. if you dont want the area of the window included do the same for the window and
subtract the area of the window from the area of the wall
2007-06-03 15:34:11 · answer #2 · answered by jay73 1 · 0⤊ 0⤋
Area of wall= 12x2.5=30 sq mt
Area of window=1.2x1.4=1.68sq mt
Area of wall excluding window=30-1.68
=28.32sq mt
2007-06-03 15:27:43 · answer #3 · answered by sweet n simple 5 · 0⤊ 0⤋
Area
= 12*2.5 - 1.2*1.4
= 30 - 1.68
= 28.32
= 28.3 m2 (to the nearest tenth)
2007-06-03 15:27:20 · answer #4 · answered by Kemmy 6 · 0⤊ 0⤋