Debra's room is 4m long, 3.5 wide and 2m high. She wallpapers all 4 walls excluding a door which is 2m by 1m and a window which
is 1m by 1m. If the wallpaper costs $3 per m square, how much cost of wallpapers?
1 answer:
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Answer: 180 degrees
Step-by-step explanation:
A rotation of 180 degrees about the origin maps .