Question

6. ABCD is a quadrilateral. AD is 12 cm long. If AB = 4 cm, BC = 3 cm. Find DC. 12 ​

Answer 1

Answer:

13 cm

Step-by-step explanation:

we can find AC

4²+3²=25

√25=5

AC=5 ( Pythagoras property)

same again to find DC

12²+5²=169

√169=13cm

thus DC =13 cm

Answer 2

Step-by-step explanation:

by using Pythagoras theorem

DC = 13 cm