The area, a, of a square is equivalent to the square of its side lengths.
select all that apply.
a. a = (6)(6) square units
b. a = s^2 square units
c. a = (x)(x) square units
d. a = (x+x) square units
e. a = 2(6) square units

b. a = s^2 square units

step-by-step explanation:

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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