satnav12321 satnav12321

19-05-2020
Mathematics

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The perimeter of the semicircle is 25.71 cm. Calculate the value of radius x. Take pi to be 3.142

Respuesta :

Hrishii Hrishii

19-05-2020

Answer:

5 cm

Step-by-step explanation:

[tex]Perimeter of semicircle = \frac{1}{2} \times 2\pi \: x +2x\\ 25.71 = 3.14 2\times x+ 2x\\ 25.71 = 5.14 2 x\\ x = \frac{25.71}{5.142} \\ x = 5 \: cm[/tex]

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