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Answer:
(-5, 1), or (-2, 4)
Step-by-step explanation:
*Look at the file - I'm sorry, I know it is so bad, but it was the best way for me to explain :P
Known :
r = 10 m
h = 11 m
Asked :
V = ...?
Answer :
V = πr²h
= 3.14 × 10² × 11
= 3.14 × 100 × 11
= 314 × 11
= <u>3</u><u>4</u><u>5</u><u>4</u><u> </u><u>m³</u>
So, the volume is 3454 m³
<em>Hope </em><em>it </em><em>helpful </em><em>and </em><em>useful </em><em>:</em><em>)</em>
3(7v-5)-v(10v-9) = 21v - 15 -10v² + 9v = - 10v² + 30v - 15