Answer :

From the figure, we see that the garden measures 20m x 20m


Area = L × B = 20m × 20m = 400m2


(ii) Varandah measures 10m x 5m.


Total Area of Varandah = L × B = 10m × 5m = 50m2


Cost per square meter = Rs. 30


If 1 m2 costs Rs. 30


50m2 costs Rs. 50 × 30 = Rs. 1500


(iii) Length of the reading room = 5m


Breadth of the reading room = 6m


As,


Area of rectangle = length × breadth


Area of floor of his room = 5 × 6 = 30 m2


Area of one tile = length × breadth


= 25 cm × 25 cm


= 0.25 m × 0.25m


= 0.0625 m2


No of tiles required


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