Question

Two sides of a triangle have the same length. The third side measures 4 meters less than twice the common length . The perimeter of the triangle is 16 meters. What are the lengths of the three sides?

Answer 1

a-lenght of two sides of triangle
c- lenght of third side of triangle

c=2a-4

Perimeter:
P=a+a+c= 2a+(2a-4)= 2a+2a-4= = 4a-4
=4(a-1)

P=16
4(a-1)=16 Divided with 4
a-1= 16/4
a-1= 4
a=4+1= 5

a=5 meters

c=2a-4 = 2*5-4 = 10-4= 6

c=6 meters

Perimeter=a+a+c=5+5+6=10+6= 16 meters

Answer 2

correcto albreto