What is the area of a regular decagon with a side length of 6 meters? Round your answer to the nearest tenth, if necessary.

Given:

A regular decagon has a side length of 6 meters.

We need to determine the area of the regular decagon.

Area of the regular decagon:

The area of the regular decagon can be determined using the formula,

where a is the length of the side of the regular decagon.

Now, substituting a = 6 in the above formula, we get;

Simplifying the terms, we have;

Rounding off to the nearest tenth, we get;

Therefore, the area of the regular decagon is 277.0 m²

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.