Question

the isosceles triangle has two sides of equal length, a, that sre longer than the length of the base ,b. the equation 2a+b=15.7 can be used to find the sides length. if one of the longer sides is 6.3 centimeters what is the length of the base

Answer 1

base = 3.1 cm

Explanation:

b= base

perimeter= p

From the statement we know that p=15.7 cm

moreover:

a=c=6.3 cm

So we have:

15.7=2*a +b

15.7 = 2*6.3 +b

15.7-12.6 = b

b= 3.1 cm = base