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Advocard [28]
3 years ago
14

Part A: If the radius of the Earth is 3960 miles, then estimate the amount of surface area of

Mathematics
1 answer:
Bond [772]3 years ago
3 0

Answer:

Surface area of  Torrid Zone (cylinder shape) = 80,897,143 miles² (Approx)

Step-by-step explanation:

Given:

Radius of the Earth = 3,960 miles

Find:

Surface area of  Torrid Zone (cylinder shape) = ?

Computation:

We know that, distance between two tropics is 3,250 miles.

So, Height = 3,250 miles

Surface\ area\ of\ Torrid\ Zone=2\pi rh\\\\Surface\ area\ of\ Torrid\ Zone=2\times \frac{22}{7}\times 3,960 \times 3,250\\\\Surface\ area\ of\ Torrid\ Zone=80,897,142.9

Surface area of  Torrid Zone (cylinder shape) = 80,897,143 miles² (Approx)

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The sum of 4 consecutive even numbers is 36. What is the first number in this sequence?
sashaice [31]

Answer:

the first number in this sequence is 6....

Step-by-step explanation:

First number = x

2nd number = x+2

3rd consecutive even number = x+4

4th consecutive even number = x+6

Therefore,

By adding these numbers:

x+x+2+x+4+x+6= 36

Add the like terms:

4x+12=36

Combine the constants:

4x=36-12

4x=24

Divide both the terms by 4

4x/4 = 24/4

x= 6

Thus the first number in this sequence is 6....

7 0
3 years ago
Read 2 more answers
Circle P has a radius of 14 feet. Circle Q has a diameter of 14 feet. What is the ratio of the circumference of P to the circumf
Salsk061 [2.6K]

Answer:

2:1

Step-by-step explanation:

Circle P has radius 14 feet.

The circumference of this circle is given by:

C=2 \pi \: r

We plug in the radius to get:

C=2\pi \:  \times 14 = 28\pi

Circle Q has diameter 14 feet.

The circumference of this circle is given by

C=\pi \: d

We substitute the diameter d=14 to get,

C=\pi \:  \times 14

C=14\pi

The ratio of the circumference of P to the circumference of Q is

28 \pi: 14\pi = 2:1

4 0
3 years ago
Solve the formula for h: A=1/2bh+3
olga55 [171]

cross multiply the equation to give you

1= a(2bh+3)

divide both sides by a(2b+3)

answer is 1/2ab+3 = h


5 0
3 years ago
Read 2 more answers
What is that simplest form of 9*5/6?​
Arturiano [62]

Answer:

7 1/2

Before simplification: 15/2

Step-by-step explanation:

6 0
3 years ago
A disease has a constant force of mortality, µ. Historically 10% of all people with the disease die within 20 years. A more viru
kolbaska11 [484]

Answer:

Step-by-step explanation:

For the disease having force of mortality  µ.

we apply exponential distribution law

probability of dying within 20 years

p( x <20) = 1-e^{-\mu} = .1

e^{-\mu} = .9

For the disease having force of mortality  2µ.

we apply exponential distribution law

probability of dying within 20 years

p( x <20) = 1 - e^{-2\mu}

= 1 - ( .9)²

= 1 - .81

= .19

or 19%

5 0
3 years ago
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