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a. Calculate the circumference of the entire figure

b. Show with a calculation that the area of the triangle is 62,4 cm6^2

c. Calculate the area of the entire figure

 

 

Thanks!!

Guest Mar 27, 2018
 #1
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a.  We have three half-circles each with a radius  of   6

So....the total crcumference is

 

3  (1/2) * 2 * pi  (6)   =    18 pi  cm  ≈  56.55 cm

 

 

b.  This is an equilateral triangle with sides of 12

Its area is

(1/2)12^2* √3/2   =   144√3/4   =  36√3 cm^2   ≈  62.35 cm ^2    (1)

 

c. The total area of the three half-circles is

3 (1/2) * pi (6)^2   =  54 pi  cm^2 ≈  169.65 cm^2   (2)

 

So....the approximate area is  (1) + (2)  ≈  232 cm^2

 

 

cool cool cool

CPhill  Mar 27, 2018

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