Volume of a cylinder = the area of the base x height of the cylinder
Area of base =
r^2
A = 6^2(
)
A = 36
V = 36
x 12
V = 432
5 cylinders = 5V
5V = 5 x (432
)
5V = 2160
Final answer: Alex needs to buy 2160
or 6785.84 cubic feet worth of compressed air to fill all of the cylindrical tanks.
Answer:
12
Step-by-step explanation:
If there are 3 classrooms that each have 25 desks and there are a total of 87 students, how many more desks need to be added to a 4th classroom, that was originally empty, so that each of the students has a desk to sit in?
25 * 3 = 75
87 - 75 = 12
Answer:
the first one
Step-by-step explanation:
Answer:
x=10
Step-by-step explanation:
these are similar triangles
8 12
------ = -----------
x+4 2x+1
using cross products
8* (2x+1) = 12(x+4)
distribute
16x + 8 = 12x+48
subtract 12x from each side
16x-12x +8 = 12x-12x+48
4x+8 = 48
subtract 8 from each side
4x+8-8 = 48-8
4x = 40
divide by 4
4x/4 = 40/x
x =10
