A triangular plot has sides 17 m, 25 m and 28 m. Using Heron’s formula, what is its area?
Correct answer C. 210 sq m
Explanation
s = (17 + 25 + 28)/2 = 35. Area = square root of [35 x 18 x 10 x 7] = square root of 44100 = 210 sq m.
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