-8r^5+23r^3-11r+17
Wasn’t Sure What It Was Asking So Hopefully That Works For You
Parameterize
by

with
and
.
Then the surface element is

and the surface integral is

Answer:
a) A = π30² = 900π cm² ≈ 2,827 cm²
b) V = Ah = 900π80 = 72000π cm³ ≈ 226,195 cm³
Step-by-step explanation:
Answer: 54x^2 - 330x - 336
step by step explanation:
6 (x-7) x (9x+8)
distribute 6 through the parentheses
(6x - 42) x (9x+8)
multiply the parentheses
54x^2 + 48x - 378x -336
collect like terms
54x^2 - 330x - 336
and thats your answer
hope this helps you :)