Question

ABC is a triangle,right angled at C if AB = 25cm and AC =7cm then BC =
a)21cm
b)22cm
c)23cm
d)24cm​

Answer 1

Answer:

d) 24 cm

Step-by-step explanation:

Let the BC be x

AB = 25 cm

AC = 7 cm

By Pythagoras theorem,

AB^2 = AC^2 + BC^2

25^2 = 7^2 + BC^2

625 = 49 + BC^2

625-49 = BC^2

576 = BC^2

√576 cm = BC

24cm = BC