Question
John's room is 18 m long and 9 m wide. A carpet measuring 10 m by 6 m is placed in the centre. What is the area of the room not covered by the carpet?
4 m

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John's room is 18 m long and 9 m wide. A carpet measuring 10 m by 6 m is placed in the centre. What is the area of the room not covered by the carpet?