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Answer: 60 cm^2
Side 1 (a)= 15cm
Side 2 (b)= 8cm
Side 3 (c)= 17cm
Semi Perimeter(s)= 20cm
Area= √20(20-15)(20-8)(20-17)
= √20 x 5 x 12 x 3
= √2 x 2 x 5 x 5 x 2 x 2 x 3 x 3
= 2 x 5 x 2 x 3
= 60cm²
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