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Vikki [24]
2 years ago
9

If the radius of a flying disc is 7.6 centimeters, what is the approximate area of the disc?

Mathematics
2 answers:
adell [148]2 years ago
7 0
Area = pi * r^2
A = 3.14 * 7.6^2
A = 181.37

In short, Your Answer would be 181.37 cm^2

Hope this helps!
myrzilka [38]2 years ago
6 0
To find the area the formule is pi(r^2)      pi(radius times radius)  
3.1416 (7.6(7.6)) = <span> 181.458816


</span>
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A piston rises to 5 cm and falls to 3 cm in such a way that it returns to the maximal height three times every two seconds. If w
sveticcg [70]

Answer:

(1 cm)cos3πt

Step-by-step explanation:

Since the piston starts at its maximal height and returns to its maximal height three times evert 2 seconds, it is modelled by a cosine functions, since a cosine function starts at its maximum point. So, its height h = Acos2πft

where A = amplitude of the oscillation and f = frequency of oscillation and t = time of propagation of oscillation.

Now, since the piston rises in such a way that it returns to the maximal height three times every two seconds, its frequency, f = number of oscillations/time taken for oscillation where number of oscillations = 3 and time taken for oscillations  = 2 s

So, f = 3/2 s =1.5 /s = 1.5 Hz

Also, since the the piston moves between 3 cm and 5 cm, the distance between its maximum displacement(crest) of 5 cm and minimum displacement(trough) of 3 cm is H = 5 cm - 3 cm = 2 cm. So its amplitude, A = H/2 = 2 cm/2 = 1 cm

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7 0
3 years ago
The endpoints of are A(2, 2) and B(3, 8). is dilated by a scale factor of 3.5 with the origin as the center of dilation to give
goldfiish [28.3K]

Answer:

The given line segment whose end points are A(2,2) and B(3,8).

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if we have to find distance between two points (a,b) and (p,q) is

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Line segment AB is dilated by a factor of 3.5 to get New line segment CD.

Coordinate of C = (3.5 ×2, 3.5×2)= (7,7)

Coordinate of D = (3.5×3, 3.5×8)=(10.5,28)

CD = AB × 3.5

CD = √37× 3.5

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= 21.28 unit(approx)

2. Slope of line joining two points (p,q) and (a,b) is given by

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m= \frac{8-2}{3-2}=6

As the two lines are coincident , so their slopes are equal.

Slope of line AB=Slope of line CD = 6




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3 years ago
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Help! I am trying to Simplify: 5√24
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Answer:

this might help better

Step-by-step explanation:

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