The swimming pool of a school gymnasium is 50 meters long, 20 meters wide and 1.2 meters deep. How many tiles are needed to paste 0.16 square meters of tiles on the red wall and the bottom of the pool
It's equivalent to a square box without a cover, so
Total area = 50 * 20 + 2 * (20 * 1.2 + 50 * 1.2) = 1000 + 168 = 1168m & # 178;;
16 = 7300 pieces;
It's 7300 in total;
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