Question

Радиус земного экватора 6400 км,а экватор примерно в 3 раза длиннее своего диаметра.Вычисли длину экватора.

Answer 1

D=2×r
r=6400 км
d=2×6400=12800км
длина экватора
3×12800=38400км.

Answer 2

Calculating the Length of the Equator

To calculate the length of the equator, we can use the information provided that the radius of the Earth's equator is 6400 km and that the equator is approximately three times longer than its diameter.

The diameter of a circle is twice the radius, so we can calculate the diameter of the Earth's equator as follows:

Diameter = 2 * Radius = 2 * 6400 km = 12800 km

Since the equator is approximately three times longer than its diameter, we can calculate the length of the equator as follows:

Length of Equator = 3 * Diameter = 3 * 12800 km = 38400 km

Therefore, the length of the Earth's equator is approximately 38400 km.