Answer:
b
Step-by-step explanation:
Answer:
Luis will have to pay $19.71 to cover the bulletin board with cork.
Step-by-step explanation:
We are given the following in the question:
Dimension of bulletin board:
Length, l = 1.1 m
Width, w = 0.56 m
Area =

Unit cost = $32 per squared meter
Total cost =

Thus, Luis will have to pay $19.71 to cover the bulletin board with cork.
Hello,
The volume of a cylinder is

.
We have : h = 17 cm but we don't have the radius.
Therefore let's find it.
You have a rectangle triangle and one of its length is the radius of the cylinder base.
So let's apply the Pythagorean theorem.
For us : AB = 17 cm, AC = 15
AB² = AC² + BC²
17² = 15² + BC²
BC² = 17² - 15²
BC² = 289 - 225
BC² = 64
BC = √64
BC = 8 cm
Therefore the radius measures 8 cm and now we have everything to calculate the cylinder's volume.

Hope it helps !
C = 15n + 85....when C = 385
385 = 15n + 85
385 - 85 = 15n
300 = 15n
300/15 = n
20 = n <== 20 watches were made