Bondiwnlama Bondiwnlama
  • 22-03-2021
  • Mathematics
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8. If the radius of a semicircle is 13.25 yd, what is the perimeter?

Respuesta :

jacobEwing
jacobEwing jacobEwing
  • 22-03-2021

Answer:

The perimeter of the shape is approximately 68.11 yards.

Step-by-step explanation:

Because it is a semicircle, we can say that its perimeter is half that of a circle, plus its diameter.

That gives us the equation:

2πr / 2 + 2r

which we can simplify:

= πr + 2r

= r(π + 2)

≈ 5.14r

So all we need to do is multiply the radius by 5.14, and that tells us the semicircle's perimeter:

5.14 × 13.25 = 68.105

If we round to the nearest hundredth, that gives us:

68.11

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