Answer:

Step-by-step explanation:
remember that,

given that,
thus substitute:

divide both sides by 4/3π:

cubic root both sides:

and we are done!
Answer:
1/8
Step-by-step explanation:
1/2 cubed is just 1/2*1/2*1/2 which is 1/8
That would be 1
I hope I've helped!
Answer:

Step-by-step explanation:

here,
a = 1,
b = k
c = 9
now,


Answer:
Given:
.
Assuming that
,
while
.
Step-by-step explanation:
By the Pythagorean identity
.
Assuming that
,
.
Rearrange the Pythagorean identity to find an expression for
.
.
Given that
:
.
Hence,
would be:
.