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Ulleksa [173]
3 years ago
9

Question 6. Find the volume.

Mathematics
1 answer:
dalvyx [7]3 years ago
6 0

Answer:

128π ft³ ; 401.92 ft³

Step-by-step explanation:

The volume of the cylinder Given above :

Volume of cylinder, V = πr²h

r =Radius = 4 ; h = 8 ft

V = π * 4² * 8

V = 16 * 8 * π

V = 128π ft³

Using π = 3.14

V = 128 * 3.14 = 401.92 ft³

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What is the determinant of H=
Triss [41]

Answer:

The answer is -7

Step-by-step explanation:

I took the test! Hope this helps <3

4 0
3 years ago
Moselle is riding a roller coaster that is 155 feet high.
DerKrebs [107]

Answer:

91

Step-by-step explanation:

155-16s²

155- 16x2²

155- 16x4

155-64

91

5 0
2 years ago
Find the sum of the arithmetic sequence. 3,5,7,9,....,21
inysia [295]
The sum of any arithmetic sequence is the average of the first and last terms times the number of terms.

Any term in an arithmetic sequence is:

a(n)=a+d(n-1), where a=initial term, d=common difference, n=term number

So the first term is a, and the last term is a+d(n-1) so the sum can be expressed as:

s(n)(a+a+d(n-1))(n/2)

s(n)=(2a+dn-d)(n/2)

s(n)=(2an+dn^2-dn)/2

However we need to know how many terms are in the sequence.

a(n)=a+d(n-1), and we know a=3 and d=2 and a(n)=21 so

21=3+2(n-1)

18=2(n-1)

9=n-1

10=n so there are 10 terms in the sequence.

s(n)=(2an+dn^2-dn)/2, becomes, a=3, d=2, n=10

s(10)=(2*3*10+2*10^2-2*10)/2

s(10)=(60+200-20)/2

s(10)=240/2

s(10)=120
7 0
3 years ago
Wendy is standing 60 feet away from a tree. Her eyes are 5 feet above the ground. She sees a bird hovering above a tree. The ang
andreev551 [17]

Answer:

a) The tree is 32.98 feet  tall.

b) The bird is 50.21 feet high in the air.

c) The Bird is 17.23 feet far above the Tree.

Step-by-step explanation:

From the attached diagram, please familiarize yourself with the statement drawn out and the points drawn out for better understanding.

Note that Line CD is the ground level and Line QE is the Wendy's eyes height.

1) <em>How tall is the tree</em> (Line BC)

line BC (tree height) => QC + QB

Line ED = QC,  ∴ QC = <em>5 ft</em>

Since <BEQ = 25° and CD = QE, ∴ QE = 60ft all in triangle BEQ

Therefore Tan 25° = BQ/60

BQ = 60 (0.4663)

BQ = <em>27.98 ft</em>

tree height => QC + QB = 5 ft + 27.98 ft ==> 32.98 ft

2) <em>How high is the bird in the air?</em> (Line AC)

line AC (bird height) => QC + QA

Line ED = QC,  ∴ QC = <em>5 ft</em>

Since <AEQ = 37° and CD = QE, ∴ QE = 60ft in triangle AEQ

Therefore Tan 37° = QA/60

QA = 60 (0.7536)

QA = <em>45.21 ft</em>

bird height => QC + QA = 5 ft + 45.21 ft ==> 50.21 ft

3) <em>How far above the tree is the bird?</em>

The difference between the bird height and the tree height = Line AC - Line BC

= 50.21 ft - 32.98 ft

= 17.23 ft

8 0
3 years ago
Find the volume of the sphere. Either enter an exact answer in terms of pi or use 3.14 for pi and round your final answer to the
Alex

Answer:

The answer is 4186.67!

Step-by-step explanation:

V=(4/3)(3.14)(10)³

Then you solve that in your calculator

You will get your answer.

4 0
3 years ago
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