A lady wants to make an open-top box for packing baked goods by cutting equal squares from each corner of an 11 in. by 20 in. piece of cardboard as shown in the
diagram. She figures that for versatility the area of the bottom must be 82 in.2. What
size of square should she cut from each corner?

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.

thus, the first answer choice, y = sec x, is the correct one

answer: c

step-by-step explanation