Find the value of X in the isosceles triangle shown below.

Split the triangle in half and use the Pythagorean theorem:

x = sqrt(13^2 - 5^2)

x = sqrt(169 - 25)

x = sqrt(144)

x = 12

The answer is D. 12

1:16

Step-by-step explanation:

The ratio of the sides of similar figures is actually called a scale factor. The ratio of the areas is the scale factor squared

scale factor= 1:4

ratio of areas=1^2:4^2

=1:16

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