选择题
2016 AMC 8 Problem 25: Semicircle in Triangle
A semicircle is inscribed in an isosceles triangle with base 16 and height 15 so that the diameter of the semicircle is contained in the base of the triangle as shown. What is the radius of the semicircle?
2016 AMC 8 第 25 题：三角形中的半圆
半圆被刻在等腰三角形中，具有基部16和高度15 ，使得半圆的直径包含在三角形的基部中，如图所示。半圆的半径是多少？
A.
4√3
B.
120/17
C.
10
D.
17√2/2
E.
17√3/2