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RD Sharma Solutions Class 6 Mathematics Solutions for Mensuration Exercise 20.4 in Chapter 19 - Mensuration
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A marble tile measures 10 cm × 12 cm. How many tiles will be required to cover a wall of size 3 m ×4m? Also, find the total cost of the tiles at the rate of Rs 2 per tile.
Answer:
Measure of marble tile = 10 cm × 12 cm
Size of the wall = 3 m × 4 m = 300 cm × 400 cm
So the area of marble tile = 10 cm × 12 cm = 120 cm²
Area of wall = 300 cm × 400 cm = 120000 cm²
No. of tiles required to cover the wall = Area of wall/ Area of one tile
Substituting the values
No. of tiles required to cover the wall = 120000/120 = 1000 tiles
It is given that
Cost of one tile = Rs 2
So the cost of 1000 tiles = 1000 × 2 = Rs 2000
Hence, 1000 number of tiles are required to cover the wall and the cost is Rs 2000.
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