tolong yaa kak pake cara yang mudah dipahami !

A.)
AC = √bc^2 - ab^2
AC = √15^2 - (8+4)^2
AC = √15^2 - 12^2
AC = √225 - 144
AC = √81
AC = 9cm

b.)
BE = √bd^2 + de^2
BE = √8^2 + 6^2
BE = √64 + 36
BE = √100
BE = 10cm

2.)
AC = 24
ED = 6
BD = 8
BE = 10

Cd = .....?
Ae = .....?

Be / be + ae = ed/ca
10 / 10 + ae = 6 / 24
10 / 10 + ae = 1 / 4
40 = 10 + ae
Ae = 40 - 10
Ae = 30cm

Bd / bd + cd = ed / ca
8 / 8 + cd = 6 / 24
8 / 8 + cd = 1/4
32 = 8 + cd
cd = 32 - 8
cd = 24