area of the triangle whose sides are 13 cm,9cm and 6cm
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Step-by-step explanation:
s = a + b + c/2 = 13 + 9 + 6 /2 = 28/2 = 14cm
area of triangle = underoot[ s (s-a) (s-b) (s-c)}
underoot[14(14-13) (14-9) (14-6)]
underoot[14*1*5*8]
underoot[2*7*1*5*2*2*2}
2*2underoot[7*1*5]
= 4root35
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