The side of triangle are 17 cm ,25 cm and 26 cm respectively what is it's area.....
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semi perimeter = a+b+c /2
= 17 +25 +26/2
=34
area = √S (S- a ) (S-b ) (S-c)
=√34 (34-17) (34-25)(34-26)
= √34 × 17 × 9 × 8
=√17×17×3×3×2×2×2 ×2
=17 × 3×4
= 51× 4
= 204
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