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Calculate the perimeter of the semi-circle shown below. Use 3.14 to approximate n.

Calculate the perimeter of the semi-circle shown below. Use 3.14 to approximate n-example-1
User Pyro
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1 Answer

12 votes
12 votes

Answer: 25.7 cm

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Step-by-step explanation:

A full circle of radius r has the circumference of

C = 2*pi*r

A semicircle will have us divide this value in half

2pi*r turns into pi*r

The curved distance along the top is roughly pi*r = pi*5 = 3.14*5 = 15.7 cm.

Add this onto the straight line distance along the bottom to arrive at 15.7+10 = 25.7 cm

User Ramon Vasconcelos
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