How many tiles of dimension 22.5 cm x 10 cm x 7.5 cm can be painted if the paint is sufficient for the surface area 2812.50 m2 (meter sq.)

30 000 tiles

Step-by-step explanation:

Firstly convert the dimensions into metres

Then find the total surface area for one tile ... in its ...;

T. Surface area = 2 (0.225 * 0.1) + 2 (0.1 * 0.075) + 2 (0.225 * 0.075)

Total surface area of one tile = 0.09375m^2

Then divide it into the surface area that the paint can be applied to ...

2812.50 : 0.09375 = 30 000 tiles