Answer:
I will answer if you insert a picture
Answer:
Total Cost = $1.47
Step-by-step explanation:
Length of the wooden board = 
Cost of the wooden board = $0.25 per foot
Total Cost = Cost per foot X Total Length in foot
= 
Total Cost = $1.47
<u>Given </u><u>:</u><u>-</u><u> </u>
- An extension ladder with 3 five-foot extensions is leaned against a wall with the base of the ladder 5 feet from the base of the wall.
<u>To </u><u>find</u><u> </u><u>:</u><u>-</u>
- How high on the wall does the top of the ladder sit?
<u>Solution</u><u> </u><u>:</u><u>-</u><u> </u>
Using Pythagoras Theorem ,
- 5² = 3² + h²
- 25 = 9 + h ²
- h² = 25 - 9
- h ²= 16
- h =√16
- h = ±4
- h = 4
The answer is 58,650 and i am sure.........