Area Problems
The three sides of a triangle are 15, 25 and x units. Which one of the following is correct?

10? x ? 40
10
10
10 ? x

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Area Problems
The area of circle inscribed in an equilateral triangle is 154 sq cm. What is the perimeter of the triangle?

21?3 cm
42 cm
42?3 cm
21 cm

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