Use what you’ve learned about multiplying with radicals to find the area of the rectangle shown here.

expression #3 is not equivalent. the others are.

25% is the answer

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answer

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.