alleryहेरॉन के सूत्र से, 13 cm, 14 cm और 15 cm भुजाओं वाले त्रिभुज का क्षेत्रफल क्या है?
A42 cm²
B168 cm²
C91 cm²
D84 cm²
Answer & Solution
Correct answer: D. 84 cm²
अर्ध-परिमाप 21 है, इसलिए क्षेत्रफल = √(21 × 8 × 7 × 6) = 84 वर्ग सेमी (cm²)।
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