请教数学高手一道题,有没有什么简单方法在1-2分钟之内算出答案。先谢过
女儿的一道题,俺实在是数学盲。
A triangle has sides of integer lengths 20cm, 13cm, and X cm, where the side of X is not the longest side. If the area of the triangle is 66cm2, what is the value of X?
俺家LD用平方/开方办法,要用20分钟才有结果。
女儿的一道题,俺实在是数学盲。
A triangle has sides of integer lengths 20cm, 13cm, and X cm, where the side of X is not the longest side. If the area of the triangle is 66cm2, what is the value of X?
俺家LD用平方/开方办法,要用20分钟才有结果。