3(x + 7) = 9(x - 1)
3(x) + 3(7) = 9(x) - 9(1)
3x + 21 = 9x - 9
<u>- 3x - 3x </u>
21 = 3x - 9
<u>+ 9 + 9</u>
<u>30</u> = <u>3x</u>
3 3
10 = x
Answer:???????????
Step-by-step explanation:
Answer:
Volume of cylinder is 785.7 square units.
Step-by-step explanation:
Given the diameter of cylinder 10 units. The height is twice its radius. we have to find its volume.
Diameter, d=10 units
⇒ 
Also given height is twice its radius.
⇒ Height=2(r)=2(5)=10 units

hence, volume of cylinder is 785.7 square units.