Question

Use the figure to find the measures.
Solve for x.
5
A = 20
A=4
X=

Answer 1

X=sqrt(5) is the answer I am sure

Answer 2

x = sqrt(5)

Explanation:

The ratio of the areas is equal to the ratio of the side lengths squared

20 5^2

----- = -----

4 x^2

Using cross products

20 x^2 = 4 * 5^2

20x^2 = 4*25

20x^2 = 100

Divide by 20

20x^2 = 100/20

x^2 = 5

Take the square root of each side

sqrt(x^2) = sqrt(5)

x = sqrt(5)