Answer:
see explanation
Step-by-step explanation:
(1)
(a)
sin(a) =
= 
(b)
cos(a) =
= 
(c)
tan(a) =
= 
----------------------------------------------------
(2)
(a)
sin(b) =
= 
(b)
cos(b) =
= 
(c)
tan(b) =
= 
For this case, the first thing to do is to model the rectangular sandbox as a rectangular prism.
The volume of the prism is given by:

Where,
- <em>w: width
</em>
- <em>l: length
</em>
- <em>h: height
</em>
Therefore, replacing values we have:

We observed that:

Therefore, the sandbox is not completely filled.
Answer:
the sandbox will hold
of sand
Jodi purchase is not enough sand to fill the sandbox to the top.

Answer:
29 miles
Step-by-step explanation:
a²+b²=c²
√a²+b² =c
√21²+20²=29
29miles