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ziro4ka [17]
3 years ago
6

Determine whether a triangle can be formed with the given side lengths. If so, use Heron's formula to find the area of the trian

gle. a = 240 b = 123 c = 207
Mathematics
1 answer:
kipiarov [429]3 years ago
4 0
Triangle inequality rule states that the sum of eachpair of sides must be greater than the third sides.
 240 + 123 > 207 true
240 + 207 > 123 true
123 + 207 > 240 true

A = √(s(s-a)(s-b)(s-c))
s is the semi-perimeter (a + b + c)/2
s = (240 + 123 + 207)/2
s = 285
A = √(285*(285-249)(285-123)(285-207))
A = 12,730 units^2
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