Perhatikan gambar berikut keliling terpasung abcd adalah ....cm a ke d 20 cm dan a ke b 41 cm tolong di jawab

Da = ae = dc = 20
( EB = ab - da 41 - 20 = 21)

Bc = √ce^2 + eb^2
Bc = √20^2 + 21^2
Bc = √400 + 441
Bc = √841
Bc = 29

Keliling = ab + bc + cd + da
Keliling = 41 + 29 + 20 + 20
Keliling = 110 cm ( A )