All categories

2 years ago

2. Given that the radius of the Earth is 6340 Km. calculate the Surface Acer of earth

Mathematics

1 answer:

serious [3.7K]2 years ago

6 0

Answer:

Step-by-step explanation:

The surface area of a sphere (which the earth is considered to be) = 4 pi r^2

pi = 3.14

r = 6340

Area = 4 * 3.14 * 6340 * 6340 = 504856736 square km.

You should either round this to 505,000,000 or express a value in scientific notation.

5.05 * 10^8

You might be interested in

ustin wants to use 188 ft of fencing to fence off the greatest possible rectangular area for a garden. What dimensions should he

Tema [17]

Answer:

I would say that it should be 48 ft long and 46 ft wide, the area would be 2208 square feet

Step-by-step explanation:

I will try my best to answer this.

I would start by dividing 188 by 4

this gives you a 47*47 square

if it needs to be a rectangle I would then make the sides 48, 48, 46, and 46

48*46 would be the dimensions

the area would be 2208 square feet

5 0

3 years ago

Find the slope of the line passing through the points (-2, 9) and (-10, 33).

Nina [5.8K]

Slope = rise / run = Δy / Δx = (y2 - y1) / (x2 - x1) = [33 - 9] / [ (-10 - (-2)]

Slope = 24 / ( -8) = - 3

Answer: - 3

8 0

3 years ago

The circumference of a circle is 3<br> π<br> π m. Find its diameter, in meters.

UkoKoshka [18]

Answer:

it is 8

Step-by-step explanation:

3 0

2 years ago

Not sure if I got it right...I know it is one of the first 2.

e-lub [12.9K]

Answer:

Step-by-step explanation:

-6x^2 + x -3 + 2x + 4

________________________

x^2 + 9

-6x^2 + 3x + 1

__________

x^2 + 9

the solution is the first one

3 0

2 years ago

Read 2 more answers

An airline runs a commuter flight between Portland, Oregon, and Seattle, Washington, which are 145 miles apart. An increase of 2

pychu [463]

The speed of the airplane is the ratio of the distance to the time

The initial average speed of the airplane is approximately 110.8 mph

Reason:

Given parameters are;

The distance between Portland Oregon and Seattle Washington = 145 miles

The decrease in travel time when the speed is increase by 20 mph = minutes

The initial speed of the airplane, v = Required;

Solution;

$t = \dfrac{145}{v}$

$t - \dfrac{12}{60} = \dfrac{145}{v + 20}$

Therefore;

$\dfrac{145}{v} - \dfrac{12}{60} = \dfrac{145}{v + 20}$

Which gives;

$\dfrac{145}{v + 20} - \dfrac{145}{v} + \dfrac{12}{60} = 0$

Therefore

0.2·v² + 4·v - 2,900 = 0

v ≈ ±110.8 mph

The initial average speed of the airplane, v≈ ± 110.8 mph

Learn more here:

brainly.com/question/11365874

4 0

2 years ago

2. Given that the radius of the Earth is 6340 Km. calculate the Surface Acer of earth ​

2. Given that the radius of the Earth is 6340 Km. calculate the Surface Acer of earth