+0

# Math help needed

0
46
2

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
Sort:

#1
+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

CPhill  Mar 27, 2018
#2
+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

### 24 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details