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Mashutka [201]
3 years ago
13

A wheel with radius 1 foot makes 1 revolution in 4 seconds. What is the linear velocity, in feet per second, of a point on the e

dge of the wheel?
Pi/4
Pi/2
4Pi
8Pi

Mathematics
2 answers:
Advocard [28]3 years ago
8 0

Answer:

B. π/2

Step-by-step explanation:

Took it on edge

3241004551 [841]3 years ago
7 0

Radius = r = 1 foot

Angular velocity = w = 1 revolutions in 4 seconds

So,

w = 0.25 revolutions per second

Since,

1 revolution = 2π radians

We can write the above equation as:

w = 0.25 x 2π radians per second = 0.5π radians per second

Linear Velocity = v = r w

Using the values, we can write:

v = 1 x 0.5π  

= 0.5 π

= π/2 feet per second

Therefore, the correct answer is option B

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The radius of a cylindrical water tank is 5.5ft, and its height is 13ft. What is the volume of the tank?
svetlana [45]

Answer:

The volume of the tank is 1235ft³

Step-by-step explanation:

To calculate the volume of a cylinder we have to use the following formula:

v = volume

h = height = 13ft

π = 3.14

r = radius = 5.5ft

v = (π * r²) * h

we replace the unknowns with the values we know

v = (3.14 * (5.5ft)²) * 13ft

v = (3.14 * 30.25ft²) * 13ft

v = 94.985ft² * 13ft

v = 1234.805ft³

Round to the nearest whole number

v = 1234.805ft³ = v = 1235ft³

4 0
3 years ago
If gas cost $1.35 per gallon and Jose has $81 budgeted for gasoline, what os the maximum distance in miles he can travel if his
MA_775_DIABLO [31]
So you times 1.35 by 60 and It gives you 81 so its 60 times 34 = 2040
3 0
3 years ago
Joyce saved $70 on an item that was 75 % % off. What was the original price?
SashulF [63]

if Joyce saved $70

at 75% off, Joyce saved 25%

so, $70 is 25%

To find the total price which is 100%, multiply $70 by 4 ( because 25% x 4 = 100% )

so the original price is $70 x 4 = $280

4 0
3 years ago
Dakota makes a salad dressing by combining 6 1/3 fluid ounces of oil and 3 3/8 fluid ounces of
pashok25 [27]

Answer:

6 11/24

Step-by-step explanation:

Do that on any calculator and it'll be that (also, if you have any other questions like that, I recommend MathPapa

7 0
3 years ago
18 - x/3 = -7 I NEED HELP FAST
stellarik [79]
3(18 - x/3 = -7)

54-x = -21

-x = -75

x = 75
7 0
3 years ago
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