Question

The perimeter of an isosceles triangle is 20.5cm if the unequal side measures 8cm then the measure of each equal side is

Answer 1

Answer:

10

Step-by-step explanation:

a + b + c = perimeter and a = b now 8 can be b as well as can be c so there will be 2 conditions let a be 8 so then b will be 8 and c will be 12 and if c is 8 then  a and b will be 10

Answer 2

Answer:

6.25cm

Step-by-step explanation:

Perimeter of isos. triangle = 20.5 cm

length of unequal side = 8cm

let length of each side xcm

perimeter of isos. triangle x+x+8

perimeter of isos. triangle

x+x+8

2x+8 = 20.5cm

2x= 20.5-8 = 12.5

x= 12.5/2 = 6.25cm