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Answer:
ratio = 4:7:9
sides are 4x,7x,9x
perimeter = 200
4x+7x+9x = 200
20x = 200
x = 10
Step-by-step explanation:
sides are 40,70,90
∆ = area of triangle
∆ = √(s)(s-a)(s-b)(s-c)
where s = p/2 = 200/2 = 100
∆ = √(100)(100-40)(100-70)(100-90)
= √(100)(60)(30)(10)
= 1341.6
Answered by
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ratio = 4:7:9
sides are 4x,7x,9x
perimeter = 200
4x+7x+9x = 200
20x = 200
x = 10
Step-by-step explanation:
sides are 40,70,90
∆ = area of triangle
∆ = √(s)(s-a)(s-b)(s-c)
where s = p/2 = 200/2 = 100
∆ = √(100)(100-40)(100-70)(100-90)
= √(100)(60)(30)(10)
= 1341.6
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