find area of triangle 26 cm, 28 cm, 30 cm
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Step-by-step explanation:
Here is the half of the permeter of the triangle. and a,b,c are the sides of triangle
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=✓42(42-26)(42-28)(42-30)
=✓42×16×14×12
=✓112896
=336
=336 cm^2
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