CBSE Class 11-science Answered
Dear sir,
Asked by gouthamjayarajan | 24 Dec, 2009, 08:16: PM
Expert Answer
s = semiperimeter = (9+12+15)/2 = 18
Using Heron's formula,
A = 
(s(s-a)(s-b)(s-c)) = (18x9x6x3) = 54 sq. unit
Regards,
Team,
TopperLearning
Answered by | 24 Dec, 2009, 08:24: PM
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