Question

What is the length of HD(with a line on top) when BH=20 inches, BC=12 inches, and DC= 14 inches? Round the answer to the nearest tenth of an inch.

Answer 1

https://static.k12.com/calms_media/media/1579000_1579500/1579252/1/43812b7a40cef1a58d68b3f48a2876909d06e5ab/MS_IMC-150123-130606.jpg

Answer 2

Do you know the Pythagoras theorem?

\(a^2 + b^2 = c^2\)

Answer 3

I do.

Answer 4

Use the Pythagoras theorem on triangle BCH to find CH.
Then use the Pythagoras theorem again on triangle CDH to find HD.

Answer 5

So, 400-144=256

Answer 6

And the square root of 256 is 16