Answer:

Step-by-step explanation:
I don't see a diagram, so I'm assuming that <em>r</em> is the radius and <em>x</em> is the height of a right circular cylinder (like a soup can).
The volume of the cylinder can be found from the formula

using the variables in your problem, this is

Plug in the given values for <em>r</em> and <em>x</em>.

If you need an approximate decimal value for the volume, use a value of pi (ask your teacher how accurate it should be).
Example: Using pi = 3.1416,

You might be asked to round that answer, say to 5322 cubic units.
Answer:
62.5%
Step-by-step explanation:
5/8 = 0.625 = 62.5%
Out of 120 students in exam, 2/3 of them passed. How many students passed?
now,
no of students passed = 2/3×120
= 0.66×120
=80...
therefore <em>8</em><em>0</em><em> </em><em> </em><em>students</em><em> </em><em>were</em><em> </em><em>passed</em><em>.</em><em>.</em><em>.</em><em>.</em>
Replace a and b with the given values:
3.14(3^2 + 3x4)
Simplify:
3.14(9 +12)
3.14(21)
Multiply:
3.14 x 21 =65.94