BayaniK246viz
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Lena is tiling a square floor with each side 3 metres long. Tiles cost $45 persquare metre.Which calculation gives the total cost of tiling the floor (in dollars)?
A 45 × 6
B 45 × 9
C 45 ÷ 6
D 45 ÷ 9

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Riza1viz
[tex] side : \ a = 3 \ m \\\\Area : \\A=a^2 \\A=3\cdot 3=9 \ m^2 \\\\Tiles \ cost\ \$\ 45 \ per \ square \ metre \\\\ 45 \cdot 9= \$ \ 405 \\ \\Answer: \ B,) \ \ 45 \cdot 9[/tex]

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