adalsaad2004
adalsaad2004 adalsaad2004
  • 12-01-2021
  • Mathematics
contestada

Here is a semicircle of radius x

Here is a semicircle of radius x class=

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jasjas12380 jasjas12380
  • 12-01-2021
The answer is C hope this helps

Circumference of a semi circle is
X times pi
Plus 2 x
Answer Link
ChoiSungHyun
ChoiSungHyun ChoiSungHyun
  • 12-01-2021

Step-by-step explanation:

Perimeter of semicircle

= Diameter + Arc of semicircle

= 2x + 0.5(π2x)

= πx + 2x. (C)

When πx + 2x = 25.71 cm,

we have x(π + 2) = 25.71cm.

=> x = 25.71 / (3.142 + 2) = 5.

Hence the radius x is 5cm.

Answer Link

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