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Anna [14]
3 years ago
6

ANSWER QUICK!!!!!!!!

Mathematics
1 answer:
tamaranim1 [39]3 years ago
5 0

Answer:

y=15

DE=11

GF=17

Step-by-step explanation:

y*2=5*6

2y=30

y=15

5+6=11

15+2=17

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Trigonometry<br> Find AC in the diagram attached.
sladkih [1.3K]

Answer:

2√2

Step-by-step explanation:

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3 0
3 years ago
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A cone-shaped paper drinking cup is to be made to hold 27 cm of water. Find the height h and radius r of the cup that will use t
andreyandreev [35.5K]

Answer:

  • r = 2.632 cm
  • h = 3.722 cm

Step-by-step explanation:

The formula for the volume of a cone of radius r and height h is ...

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Then r² can be found in terms of h and V as ...

  r² = 3V/(πh)

The lateral surface area of the cone is ...

  A = (1/2)(2πr)√(r² +h²) = πr√(r² +h²)

The square of the area is ...

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Substituting for r² using the expression above, we have ...

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The corresponding value of r is ...

  r = √(3V/(πh)) = 9/√(π·h) ≈ 2.6319242

The optimal radius is 2.632 cm; the optimal height is 3.722 cm.

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The second derivative test applied to T finds that T is always concave upward, so the value we found is a minimum.

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Interestingly, the ratio of h to r is √2.

8 0
3 years ago
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Answer:

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Step-by-step explanation:

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