1.

Find the length of each of the equal sides of the isosceles triangle if the perimeter and unequal side are perimeter=30cm unequal side =8cm

Answer»

Answer:

11 cm

Given:

Perimeter=30 cm

And Unequal sides=8 cm

To find:

EQUAL sides of the ISOSCELES triangle

Solution:-

LET the equal sides be x {as two sides of isosceles triangle are equal}

We know that

Perimeter of isosceles triangle=Sum of all sides

30=AB+BC+CA

30=8+x+x

30-8=2x

22=2x

11=x

•x=11 cm

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★ Verification ★

Perimeter=AB+BC+CA

=8+11+11

=30 cm


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