Question : The perimeter of an isosceles triangle is 91 cm. If one of the equal sides measures 28 cm, then what is the value of the other non-equal side?
Option 1: 56 cm
Option 2: 14 cm
Option 3: 42 cm
Option 4: 35 cm
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Correct Answer: 35 cm
Solution : Given, Perimeter = 91 cm Length of two equal sides = 28 cm Let the length of the non-equal side be $x$ cm. Perimeter = Sum of all sides ⇒ $91=28+28+x$ ⇒ $91=56+x$ ⇒ $x=91-56$ ⇒ $x=35$ Hence, the correct answer is 35 cm.
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