Q. 74.4( 167 Votes )

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Answer :

(i) It is given in the question that,


Length of field = 90 m


Breadth of field = 60 m


We know that,


Area of rectangle = Length × Breadth


Area of field = 90 × 60


= 5400 m2


Also, we have


Length of road PQRS = 90 m


Length of road ABCD = 60 m


Width of each road = 3 m



Area of the roads = Area of (PQRS) + Area of (ABCD) – Area of (KLMN)


= (90 × 3) + (60 × 3) – (3 × 3)


= 270 + 180 – 9


= 450 – 9


= 441 m2


(ii) It is also given in the question that,


Cost of constructing 1 m2 of road = Rs 110


Cost of constructing 441 m2 road = 110 × 441


= Rs 48510

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