I think it would most likely be 12 because you can divide 12 by 12.
10.) The lines that the angles are on are not parallel to each other. 11.) Angle 2 is also 60 degrees because they're corresponding angles. They're just on different lines but the place they meet the intersecting lines are the same. 12.) A real life situation that uses parallel lines are a rectangular room's walls that are parallel to each other.
Answer:
a) 9
b) 21.2 cm^3
Step-by-step explanation:
a) the balls have a diameter of 3, so 3 balls together = 3 * 3 =9, that is height.
b) volume of ball = 4/3 πr³ = 4/3 * π * 1.5^3 =14.137 cm^3
of 3 balls = 14.137 cm^3 * 3 = 42.411 cm^3
volume of cylinder = =πr^2h = =π * 1.5^2 * 9 =63.6 cm^3
so empty space = 63.6 cm^3 - 42.411 cm^3 = 21.2 cm^3
