Respuesta :

sqdancefan
For similar figures, the ratio of areas is the square of the ratio of linear dimensions. The smaller billboard requires
.. (4/5)^2 * 250 ft^2 = 160 ft^
of material.
Catya
The side lengths are ratio 5:4
250 = LW
area smaller = (4/5)L(4/5)W
= (16/25)LW
= (16/25)(250)
= 160 ft^2

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