find the area of triangle whose sides are 9cm,28cm,35cm
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Answer:
semiperimeter = sum of all sides /2
s = a + b + c /2
s = 9+28+35 /2 = 72/2 = 36
area = √ s ( s- a ) ( s - b ) ( s-c)
= √ 36 ( 36-9 ) ( 36 - 28 ) ( 36 - 35 )
= √ 36 × 27 × 8 × 1
= √ 3×2 × 3 × 2 × 3×3×3×2×2×2
= 3×2×3×2 √ 3×2
= 36 √ 6 cm ^2
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Answer:
the answer of triangle 72cm
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