how many tiles each of area 400 CM square will be needed to pave a Footpath which is 2 metre wide and surrounds a grass plot 25 metre long and 13 metre wide
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Step-by-step explanation:
Area required to be paved=(25+4)(13+4)-25*13
=29*17-25*13
=493-325=168m∧2=168*10000 cm∧2
area of 1 tile =400 cm∧2
number of tile=168*10000/400=16800/4=4200
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