## Monday, November 19, 2012

### 2.4 Textbook Question 24

For this question I had to find the distance of how much a person can see across the ocean to the horizon. I know that in order to find the distance you have to find the square root of 12.74 x h. The height is how much the person's eyes are above the water.

~First I re - wrote the formula.
~Then I found out the height of how much meters Adele's eyes are above the water which was 4.1 m.
~Next I multiplied 12.74 x 41. Then I got the answer of 52.234.
~Lastly now I have to find the square root of 52.234, so I got the answer of around 7.2273 km. Then I rounded my answer to 7.20 km.

In this question it is very similar to the first one. The only thing different I have to do in convert the height  which was 165 cm into m. I did this by dividing 165 by 100 because there is 100 cm in 1 meter.

First I re - wrote the formula.
Then I found the height that Brian was above the water, which was 165 cm then converted in 1.65 m.
Then I finally multiplied 12.74 by 1.65 and got the answer of 21.021.
Lastly I found the square root of 21.021 and I got around 4.5848 km, and rounded this answer to 4.6 km.

In this question I converted the height of Yvonne's eyes above the water into meters by multiplying 5 ( The height in km. ) by 1000 because there is 1000 meters in 1 kilometer.

First I re - wrote the formula.
Then I found the height that Yvonne's eyes were above the water, which was 5 km then I converted it to 5000 m.
Then I multiplied 12.74 by 5000 and got a product of 63700.
Lastly I found the square root of 63700 and got an answer of around 252.2885 km and then I rounded it to 252.4 km.