Answer:
option 3
Step-by-step explanation:
V= πr²h
to make h the subject
h= V÷πr²
just take πr² to the other side
as it in multiplication on the left hand side, it will in division in right hand side.
hope it helps!
Answer:
46
Step-by-step explanation:
16+30
Answer:
5
Step-by-step explanation:
in math we can write as this

4(x+4)= 3(x+7)
4x + 16 = 3x + 21
4x - 3x = 21 - 16
x = 5