There are 35 students in art class and 57 students in dance class. find the number of students who are either in art class or in dance class.
when two classes meet at different hours and 12 students are enrolled in both activities
when two classes meet at the same hour

a) 32pie square meters

step-by-step explanation:

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step-by-step

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.

the answer would be  

a.

3: 1

step-by-step explanation: