题目内容（请给出正确答案）

[主观题]

If a and b are the lengths of the legs of a right tri-angle whose hypotenuse is 10 and who

se area is 20, what is the value of (a + b)2？

A．100

B．120

C．140

D．180

E．200

提问人：网友foolimon 发布时间：2022-01-06

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