Question

An isosceles triangle has a perimeter of 30 cm. If the base is 7.8 cm long, find the length of the equal sides. ​

Answer 1

Answer:

Length of one side is 11.1 cm

Answer 2

Perimeter =A+B+C

30=7.8+x+x

30-7.8=2x

22.2/2=X

X=11.1cm

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