Tlg dibantu yahh,sbelumnya terimakasih:)

tinggi/cd=akar5^2-3^2
=akar25-9
=akar16
=4 cm
ca=cb
a. keliling=5+6+5=16 cm
b. luas=a×t/2=6×4/2=12 cm^2

keliling = 5+6+5 = 16cm
luas ?
cd = akar cb^2-db^2 = akar 5^2-3^2= akar 25-9 = akar 16 = 4
luas =1/2×a×t = 1/2×6×4=12cm^2