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Subject :IMO    Class : Class 6

The diagram shows the floor plan of a room. Adjacent walls are perpendicular to each other. Letters a and b represent the lengths of some of the walls. The area of the room is

A3ab − a2
B2a2+ 3ab
D3ab − 2a2

Ans 1:

Class : Class 8

Ans 2:

Class : Class 9

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