Question

Find the length of each of the equal sides of an isosceles triangle, if the perimeter and unequal side (i) perimeter=45 CM unequal side =25cm​

Answer 1

10 cm

Step-by-step explanation:

Perimeter of isosceles triangle = 2×equal side + unequal side

Let the equal side be x

45= 2x+25

2x=45-25

2x=20

x=10

Answer 2

Answer:

Perimeter=sum of all sides

Perimetr = 45 cm

Sum of all three sides = 45cm

1side=25

Remaining two sides = 45-25=20cm

Both are same

Let side as x

X+X=20

2X=20

X=20/2=10

Both sides = 10cm each