1.

How many 4cm by 4cm tiles are needed to cover an area, which measures 20cm by 28 cm

Answer»

Gudnyt

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Area to be COVERED = 20 * 28 = 560cm²

Area of one tile = 4 * 4 = 16cm²

Therefore, NUMBER of TILES required to cover the area

= 560 / 16

= 35 tiles

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