UP Police Constable practice question
Find the area of the triangle with vertices A(-4, 8), B(6, -2) and C(-7, -6).
From a UP Police Constable Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (D) 85 sq. units
Area = ½|x₁(y₂−y₃) + x₂(y₃−y₁) + x₃(y₁−y₂)| = ½|-4(-2−-6) + 6(-6−8) + -7(8−-2)| = ½|-170| = 85 sq. units.
हिंदी में प्रश्न
शीर्षों A(-4, 8), B(6, -2) और C(-7, -6) वाले त्रिभुज का क्षेत्रफल ज्ञात कीजिए।
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सही उत्तर: (D) 85 वर्ग इकाई
क्षेत्रफल = ½|x₁(y₂−y₃) + x₂(y₃−y₁) + x₃(y₁−y₂)| = ½|-4(-2−-6) + 6(-6−8) + -7(8−-2)| = ½|-170| = 85 वर्ग इकाई।
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