<PRE><B>Question 815535</B>
v = M(a^2)
v value of mirror
a = mirror area
M constant of proportionality for the value of this type of mirror
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v = M(a^2)
400 = M(60^2)
M = 400/(60^2)
M = 0.111111
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v = M(a^2)
v = M(45^2)
v = 0.111111(2025)
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Answer:
224.999999
the value of a 45 sq.m mirror is $225.00
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the problem statement tells us that the value of this type of mirror varies DIRECTLY (i.e. in the same proportion), as the area-squared of the mirror.
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the constant of proportionality (M) is necessary in order to properly relate area-squared to value.
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