Question

Find the length of the equal sides of the isosceles triangle, if the perimeter and unequal side are : Perimeter =30 cm, unequal side = 15 cm​

Answer 1

Answer:

length of equal sides=7.5cm

Step-by-step explanation:

let the equal sides be x and x

x+x+15cm=30cm

2x+15cm=30cm

2x=30cm-15cm

2x=15cm

x=15/2

x=7.5cm

Answer 2

Answer:

Let the equal sides be x,x

perimeter of triangle= x+x+15

30=15+2x

30-15=2x

x=15/2

x = 7.5

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