Answer:
Step-by-step explanation:
Since the diameter is 6 cm, the radius is 3 cm. Use the area formula to get 113.04 cm squared. Then, you multiply that by the height of the rod, which is 20 cm. The volume of one rod is 2260.8 cm cubed. To find how much steel is needed for 189 rods, multiple the volume of one rod by 189. Your answer should be 427291.2 cm³.
10 should be correct , hope this helped
Answer:
5x + 20 + (-20) = 5x
Step-by-step explanation:
Opposite of 20 is just -(20) which is -20.
5x + 20 + (-20) = 5x + 20 -20 = 5x
It’s nine because 3*8 equals 24 and 3*3 =9