- Todd uses 21 white tiles and some black tiles to make a mosaic. The mosaic has a total area of 144 square centimeters. Each
tile has an area of 3 square centimeters. How many black tiles did Todd use? Explain.
(Help me please)
2 answers:
The answer is 27 tiles !
21 white tiles × 3 = the total area it takes up!
21 × 3 = 63
144 - 63 = 81
81 is the area left!
Divide by 3 to find how many black tiles are needed!
81÷ 3 = 27
Hope I Helped !
Answer:
48
Step-by-step explanation:
21 white tiles = 63 cm2
total number is 144
144-63 = 81
81/3 = 27
so 27 black tiles
21+27 = 48 total.
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