Answer:
Volume left = 16π cm³ or 50.265 cm³
Step-by-step explanation:
Let's first find the surface area of the tennis ball.
S.A = (4/3)πr³
Radius of a ball = 2 cm
Thus;
S.A = (4/3)π(2)³
S.A = 32π/3
Since there are 3 radius balls that will make the cylinder full, then;
Surface area of 3 balls = 3 × 32π/3 = 32π
Now, formula for volume of cylinder is;
V = πr²h
r = 2 cm
h = 4 × 3 = 12 (since diameter of tennis ball is 4 cm)
Thus;
V = π × 2² × 12
V = 48π
Thus;
Volume left = Volume of cylinder - surface area of 3 balls = 48π - 32π = 16π cm³ or 50.265 cm³
The value of x is 38 and y is 40
Answer:
A
Step-by-step explanation:
(2*(3.14)*20)*25
Answer:
A. 9(x + 8) = 9(x + 12)
Step-by-step explanation:
Simplify the probelm;
9(x + 8) = 9(x + 12)
Distribute;
9x + 72 = 9x + 108
Inverse opreations;
9x + 72 = 9x + 108
-9x -9x
72 = 108
This statement is not true, hence the equation has no solutions;
The student made an error in step 2. It should be 4(2)+4(4x).