Answer:
Y = √80 or 4√5
Explanation:
According to the combined triangle, the green area would be 8. Since it is a right triangle, we can use the Pythagorean theorem: a² + b² = c²
in this case, y would be the hypotenuse, or C in the equation.
thus, the equation would be:
4² + 8² = C² where C is Y
16 + 64 = C²
80 = C²
√80 = √C²
C = √80 or 4√5
Y = √80 or 4√5
I hope this helped you!