Quadrilateral ABCD circumscribes circle. If AB = 8 cm, BC = 7 cm and CD = 6 cm, then the length of AD is:
Answer & explanation
Correct answer: option 3
AB = 8 cm, BC = 7 cm and CD = 6 cm.
We know,
AD + BC = CD + AB
= AD + 7 = 6 + 8
= AD = 14 – 7
= AD = 7 cm