1.

A paper cutting is placedon a graph as shownin the figure, each on he X and Y axes represens a distance of2 cm. The area of the paper cutting is "_________"Cm^(2).

Answer»

(a) 378
(b)186
(c ) 312
(d) 156

Solution :We can DIVIDE the PAPER CUTTING into 3 rectangles of dimension `(9xx3), (11xx3),(9xx2)`.
Area = `(9xx3) + (11xx3) + (9xx2)` = 78 ,
but 1 div= 2 cm
Area = 78 XX 4 = 312 " " `cm^(2)`


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