alleryHeron च्या सूत्रानुसार, 13, 14 आणि 15 cm बाजू असलेल्या त्रिकोणाचे क्षेत्रफळ किती?
A42 cm²
B168 cm²
C91 cm²
D84 cm²
Answer & Solution
Correct answer: D. 84 cm²
अर्धपरिमिती 21 आहे, त्यामुळे क्षेत्रफळ हे 21 x 8 x 7 x 6 चे वर्गमूळ = 84 cm² आहे.
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