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mina [271]
3 years ago
12

Find the surface area of a cylinder with a height of 8 inches and base diameter of 6 inches

Mathematics
1 answer:
Jobisdone [24]3 years ago
5 0

Answer:

  207.24 in²

Step-by-step explanation:

When the diameter is 6 inches, the radius is 3 inches, half the diameter.

We can rearrange the formula to make it a little easier to calculate:

  SA = 2πR(R +H)

Substituting the given values, R=3, H=8, π=3.14, this becomes ...

  SA = 2(3.14)(3)(3+8) = 207.24 . . . . square inches

The surface area of the cylinder is 207.24 square inches.

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Answer:

2.3 degrees.      

Step-by-step explanation:

Please find the attachment.

We are told that an airplane must clear a 60-foot pole at the end of a runway 500 yards long.

Let us convert 500 yards to feet.

1 yard= 3 feet.

500 yards= 3*500 feet= 1500 feet.

We can see from our attachment pole and runway are in form of a right triangle. The pole is opposite to angle of elevation of plane and length of runway is adjacent.

Since tangent represents the relation between opposite and adjacent of right triangle, So we will use tangent to find angle of elevation that plane must ascend to clear the pole.  

tan(\theta)=\frac{60}{1500}    

\theta=\tan^{-1}(\frac{60}{1500} )

\theta=\tan^{-1}(0.04)

\theta=2.290610042639

Therefore, the airplane must ascend 2.3 degrees to clear the pole.

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3 years ago
What is a solution for 11/12
elena-s [515]

Answer:

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Step-by-step explanation:

Because this can not be actually divided into a "number" like 2 or 5, we can only get a approximate. Like the top answer.

Round to the nearest ten is 0.9

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Step-by-step explanation:

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Step-by-step explanation:

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