# Arun has built a cubical tank with lid and each outer edge is 2.5 cm long. the outer surface of the tank excluding the base is covered with square tiles of 25 cm long. find the number of tiles required.

2
by ryadav

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by ryadav

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5 tiles are required

because

upper surface of the tank is covered with a lid

because

upper surface of the tank is covered with a lid

= 4×(2.5)²

= 4×6.25

= 25 cm²

total area of 1 tile = 25×25

=625 cm²

no:of tiles = 25/625

=.04

area to be tiled = 2.5² × 4

= 25 m²

= 2500 cm²

area of 1 tile = 625 cm²

no:of tiles = 2500/625

= 4