alleryहेरोनाच्या सूत्रा प्रमाण 13, 14 आनी 15 सेंमी.
A42 cm²
B168 cm²
C91 cm²
D84 cm²
Answer & Solution
Correct answer: D. 84 cm²
अर्दपरिमिती 21 आसता, देखून क्षेत्रफळ हें 21 x 8 x 7 x 6 = 84 चौरस सेंमी.
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