Answer:
10cmsquare
Step-by-step explanation:
name the triangle ABC
use pythagoras theo.
ACsq=ABsq+BCsq
ACsq=5×5 + 4×4
ACsq=25+16
ACsq=41
AC=sq root 41
[tex] \sqrt{41} [/tex]
ar shaded region=(use pythagoras again with the shaded triangle)
root of 41×root of 41-4×4
=41-16
=25
root of 25=5cm
