The area of the regular hexagon is 169.74 ft2. A regular hexagon has an apothem with length 7 feet and an area of 169.74 feet squared. What is the perimeter, rounded to the nearest tenth?

The perimeter of the hexagon is 48.5 feet

Step-by-step explanation:

In this question, we are asked to calculate the perimeter of a regular hexagon, given the length of its apothem and its area value

Recall;

Mathematically the area of a regular hexagon A = 1/2 * P * a

where P is the perimeter of the hexagon which is unknown according to the question, a is the apothem of the hexagon which is 7 feet and A is the area which is 169.74 sq.feet according to the question

Plugging these values into the equation, we have;

169.74 = 0.5 * 7 * P

P = 169.74/3.5

P = 48.50 ft

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.