Question

6. The base of an isosceles triangle is one-third of its equal sides. It
side of the triangle.
angle is one-third of its equal sides. If the perimeter is 42 cm, find each side​

Answer 1

let the equal sides is equal to X

base is equal to (1/3)x

perimeter is equal to 42 =a+b+c

a=x

b=x

c=(1/3)x

X+x+(1/3)x=42

(3x+3x+x)/3=42

7x=42*3

x=126/7=18

x/3=18/3=6

to verify

perimeter =18+18+6=42