AABC is an isosceles triangle such that AB = AC and AB : BC:: 13:11. If its perimeter is 259 cm, then
find the length of its sides.
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Answer:
ab = ac
ab :bc :: 13:11
ab:ac:bc ::13:13:11
13+13+11 =37
perimeter = 259
37x = 259
x = 259/37
=7
ratio of side = 13×7:13×7:11×7
= 91:91:77 :: ab:ac:bc
= the sides are 91 cm each and 77 cm
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