First isolate the group with h in it
minus 2pir^2 from both sides
s-2pir^2=2pirh
divide both sides by 2pir
(s-2pir^2)/(2pir)=h
Answer: 
Step-by-step explanation:
Given
Function is 



from (i) and (ii) we get

Answer:
they are identical. proved below.
Step-by-step explanation:
- formula:

using the formula to proof:



True. proved that they are identical.
Answer :
the answer is -4/5 or -0.8
step-by-step explanation:
1-9/7+3 = -8/10
now simplify that,
-8/2 = -4
10/2 = 5
so we have -4/5 0r -0.8
Answer:
Step-by-step explanation:
Below the sea level should be mentioned by negative value
So, It is = - 4.5