Question

In the given tzaiangleABC angle B =90° AC=5cm and Bc =4cm Find the primeter​

Answer 1

in traingle ABC<ABC = 90°

AC=5cm. BC= 4 cm

by Pythagoras theorem

Ac^2= AB^+BC^2

(5)^2= AB^2+(4)^2

25= AB^2+16

AB^2=25-16=9

AB= 3 cm

perimeter of traingle ABC =AB+BC+ AC

(3+4+5) cm

12 cm