如图,∠ABC=90度,∠FAC=90,BC长为2cm,AB长为3cm,AF长为10cm,求正方形CDEF的面积
问题描述:
如图,∠ABC=90度,∠FAC=90,BC长为2cm,AB长为3cm,AF长为10cm,求正方形CDEF的面积
答
CDEF的面积=CF²=AC²+AF²
=AB²+BC²+AF²
=2²+3²+10²
=113cm²