Question

Determine the length of CD. Show your work.

Answer 1

The length of line CD is 20. 9

How to determine the length

Note that triangle CDY is an isosceles triangle

Using the Pythagoras theorem

Hypotenuse square = opposite square + adjacent square

Hypotenuse = line CD

opposite = 20

Adjacent = 6

Substitute into equation

$Line CD^2 = 20^2 + 6^2$

$Line CD^2 = 400 + 36$

$Line CD^2 = 436$

Make line CD^2 subject by find the square root of the other side

$Line CD = \sqrt{436}$

$Line CD = 20.9$

Therefore, the length of line CD is 20. 9

Learn more about Pythagorean theorem here:

brainly.com/question/231802

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