Answer:
r=4 3/4=19/4in
circumference=2πr=2×22/7×19/4=29.85=30inch
Answer:
D. (12+6)*(11-7)=72
Step-by-step explanation:
(12+6)*(11-7)=72
18*4=72
72=72
D
If the ball has an initial velocity of 130 ft/s and an angle of 41°, the time it will take the ball to hit the ground is 5.33 seconds
Since the ball is a projectile, we need to find its time of flight for it to reach the ground
<h3>Time of flight of ball</h3>
The time of flight of the ball is the time it will take to hit the ground. It is given by
T = 2UsinФ/g where
- U = speed of ball = 130 ft/s
- Ф = angle of projection = 41° and
- g = acceleration due to garvity = 32 ft/s²
Substituting the values of the variables into the equation, we have
T = 2UsinФ/g
T = 2 × 130 ft/s × sin41° ÷ 32 ft/s²
T = 260 ft/s × 0.6561 ÷ 32 ft/s²
T = 170.58 ft/s ÷ 32 ft/s²
T = 5.33 seconds
So, the time it will take the ball to hit the ground is 5.33 seconds
Learn more about time of flight here:
brainly.com/question/24136952
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Answer:
See below.
Step-by-step explanation:
As the diameter is 5 inches, the radius “r” is 5/2 = 2.5 inches.
We calculate the volume of a sphere as follows:
As we have to use 3.14 for pi, we’ll use that instead of “true” pi.
The formula becomes:
The volume of the sphere is 65.42 cubic inches.