Use photmath app it will help you out:)
Answer:
141.4
Step-by-step explanation:
Plug the numbers into the formula, V=πr2h, you know that your radius is 3 and your height is 5, so you get V=π(3)2(5), you just then put it in the calculator. You get 141.37, round to the nearest tenth 141.4
1 because you replace x with 2 so, (2)squared -5x2 + 7 = 4 - 10 + 7 = 1
Is there more information i can get out of this ?