A) 56
B) 64
C) 78
D) 89
Correct Answer: B
Solution :
Let area of cutting part be \[x,\,\,y\]and \[~z\,\,c{{m}^{2}}\] Now, Area of two dotted region \[=\left( {{\left( 11 \right)}^{2}}-x \right)+\left( {{\left( 7 \right)}^{2}}-\left( y+z \right) \right)\] \[121-x+49-y-z=\left( 170-x-y-z \right)\] Now, Area of lined region \[\left( {{\left( 9 \right)}^{2}}-x-y+{{\left( 5 \right)}^{2}}-z \right)=81+25-x-y-z\] \[=106-x-y-z\] \[\therefore \]Required area = Area of dotted region Area of lined region \[=170-106-x-y-z+x+y+z=64\]sq. unitsYou need to login to perform this action.
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