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Mathematics
Geometry
Dilations
A triangle on a coordinate plane was dilated. After being dilated, its area is 6.25 as great as the original figure. What is the scale factor?
3 answers
Let $x$ be the scale factor. Then the ratio of the areas is $x^2 = 6.25 = \left(5/2\right)^2.$ Since $x$ must be positive, $x = \boxed{\frac{5}{2}}.$
what is the answer?
The answer is $\boxed{\frac{5}{2}}.$
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