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the radius of the circle above is 40mm. what is the circumference of the circle?

Sagot :

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[tex]\begin{gathered} \text{Circumference = 2pi r} \\ \text{Circumference = (2)(3.14)(40)} \\ \text{Circumference = 251.2 mm} \end{gathered}[/tex]

b)

As one angle measure more than 108° this triangle is an obtuse triangle

c)

It is an acute triangle