Which one the on number 1 ?
Answer:
The radius of the silo is 5.788 feet.
Step-by-step explanation:
Since the silo has the shape of a cylinder, then;
Volume of the silo = Volume of a cylinder = 
h
Where: r is the radius of the silo, and h is the height.
Given that: volume = 2106 cubic feet, and height = 20 feet.
Then,
2106 =
x
x 20
2106 = 

2106 x 7 = 440
14742 = 440
= 
= 33.5045
⇒ r = 
= 5.78831
r = 5.788 feet
The radius of the silo is 5.788 feet.
Answer:
Step-by-step explanation:
4
unit digit=4
cube=64
Answer:
n = 13
Step-by-step explanation:
24 = 3 (n-5)
3n - 15 = 24
3n = 24 +15
3n = 39
n = 39/3
n = 13
Answer:
16
Step-by-step explanation:
To solve this equation, we need the formula for perfect squares:
or
<em>this is the formula we will use because the signs match the one in the question</em>.
Knowing these, we can set up an equation that assumes that the answer we will end up with is a perfect square.
Work:

- this is the setup for being able to solve for the unknown
, now we need to solve for
.
(I replaced
with
because I'm setting up this question to be a perfect square).

- multiply the left side. Remember that your answer will not be
, but
.

- Divide like terms and isolate the variable. In this case,
and
are on both sides, so dive them and they will be canceled out.

- divide by
and you will have your value for
.

- Now we plug
into our original equation equation for perfect squares.

Our final answer is 16.