Question

How many tiles measuring 20cm.20cm each will be required to pave a 1.5m wide footpath around a grassy plot of 25m.16m?
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Answer 1

Answer:

3300 tiles

Step-by-step explanation:

first find the area of the footpath

it will be theatres of grassy plot subtracted from the total area(plot and foot path)

area of plot is 25×16 which is 400m square

total area is 28×19 (25+3 is the length with the footpath and 16+3 is the breath with footpath)

which is 532m square

area of foot path is 532-400=132m square

now to convert it into cm square we multiply the area with10000

so the area in cm square is 1320000 cm square

now let us find the area of the tiles

area of tiles is 20×20=400cm square

to find the number of tiles required we should divide the area of footpath by the area of tiles

1320000cm square ÷ 400cm square

so the number of tiles required is 3300