ada yg tau gk keliling sama luas yg nomor 2

BC=√AD²-AO²
BC=√5²-3²
BC=√25-9
BC=√16
BC=4

K= AB+BC+CD+DA
K= 13+4+10+5
K= 32 cm

L=(AB+CD)/2 x BC
L=(13+10)/2 x 4
L= 46 cm²