What is the exact radius of the earth?

What is the exact radius of the earth?

Its equatorial radius is 6378 km, but its polar radius is 6357 km – in other words, the Earth is slightly flattened. Eratosthenes was measuring the polar radius, and his value (using the 0.15 km/stadium conversion) lies between the polar and equatorial values.

What is a radius in CM?

Radius is equal to half of the diameter of the circle. If the diameter is 10 cm, then radius will be equal to 5 cm.

How long is the Earth’s radius in centimeters?

The equitorial radius of the Earth is 6,378 kilometers (km): Therefore, 6,378 km = 637,800,000 cm. or 6.378 * 108 cm.

Is the Earth 6371 km?

See also  What Number Of Atoms Make Up A Human Cell

Earth radius
Metric system	6,357 to 6,378 km
English units	3,950 to 3,963 mi

Earth radius
Metric system	6,357 to 6,378 km
English units	3,950 to 3,963 mi

What is Earth’s radius Class 9?

The radius of the earth is about 6370 km.

What is the radius of Earth Class 7?

The radius of the earth is 6371 km.

Is the radius of 12 cm?

Now we are given a circle with the radius of 12cm. Hence the diameter of the circle is 2 × 12 = 24cm.

What is a radius Class 6?

The distance from the centre point to the circle is called the radius. In other words, a line segment joining the centre of a circle with any point on the circle is called a radius (plural: radii) of that circle.

What is 7cm radius?

So, the correct answer is “the area of the given circle with radius 7 is given by 154 sq. cm and the circumference is given by 44 cm respectively.”.

How long is a full circle of Earth?

Using those measurements, the equatorial circumference of Earth is about 24,901 miles (40,075 km). However, from pole to pole — the meridional circumference — Earth is only 24,860 miles (40,008 km) around. Our planet’s shape, caused by the flattening at the poles, is called an oblate spheroid.

How old is Earth?

Earth is estimated to be 4.54 billion years old, plus or minus about 50 million years. Scientists have scoured the Earth searching for the oldest rocks to radiometrically date. In northwestern Canada, they discovered rocks about 4.03 billion years old.

How heavy is the Earth?

Does the Earth Spin 1500 km?

The Earth is always spinning on its axis. It takes 24 hours to spin around once, so it rotates once a day. The Earth spins at over 1,500 km an hour! That’s more than 4 times faster than a Formula 1 car racing at top speed!

How fast is Earth in KM?

Earth’s orbital speed averages 29.78 km/s (107,208 km/h; 66,616 mph), which is fast enough to cover the planet’s diameter in 7 minutes and the distance to the Moon in 4 hours.

Is the radius of Earth is 6400 km?

The mass of the Earth is about 10 times the mass of Mars. If an object weighs 200 N on the surface of Earth, its weight on the surface of Mars will be.

What is radius of a circle Class 7?

Note: Circle is a closed 2D figure in which all points are at equal distance from a fixed point called center and this distance is called radius.

How do you find the radius of a Class 7?

Radius formula is simply derived by halving the diameter of the circle. When we connect a point on the circumference of a circle to the exact centre, then the line segment made is called the radius of the ring. The distance between the center of the circle to its circumference is the radius.

What is the mass of Earth Class 11?

The mass of the earth is 6×1024 kg and that of the moon is 7.4×1022 kg.

What is the radius of the earth Mcq?

6,371 km is the radius of the earth.

What is the radius of Earth in SI unit?

The Earth’s radius is 6371 km .