Question

19 What is the value of side AC if AB = 7 cm and BC = 5 cm?
a) 8.2 cm
b) 8.6 cm
c) 8.4 cm
d) 8.1 cm​

Answer 1

Answer:

Here Pythagoras theorem applied,

(AB)2 + (BC)2 = (AC)2

(7)2 + (5)2 = (AC)2

49 + 25 = (AC)2

74 = (AC)2

8.6 CM = AC

Answer is B) 8.6cm