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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
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2+0 Answers

 #1
avatar+85759 
+1

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
 #2
avatar+21 
+1

I think you can try to help with the answer B.
Substituting the values of the sides in the formula shown in the photo. And so you can calculate option B. The screenshot I found on site studydaddy in the section of math.

AKM17  Mar 28, 2018

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