5. How many tiles whose length and breadth are 13 cm and 7 cm respectively are needed to cover a rectangular region whose length and breadth are 520 cm and 140 cm? 6. Find the cost of tiling a rectangular plot of land 300 m long and 150 m wide at the rate of $6 per hundred square m.
Answers
Answered by
1
Area of region = 100 cm x 144 cm = 14400 cm.sq
Area of one tile = 5 cm x 12 cm = 60 cm.sq
Number of tiles = \frac{Area\ of\ region}{Area\ of\ one\ tile}
Area of one tile
Area of region
= 240
Thus, 240 tiles are required.
(b) Area of region = 70 cm x 36 cm = 2520 cm.sq
Area of one tile = 5 cm x 12 cm = 60 cm.sq
Number of tiles = \frac{Area\ of\ region}{Area\ of\ one\ tile}
Area of one tile
Area of region
= 42
Thus, 42 tiles are required
Similar questions