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the design is made from two sectors

 Mar 3, 2020
 #1
avatar+25917 
+1

two sides are   4.5         9cm

 

smaller arc     pi x d  x 50/360 = pi x 7 x 50/360 cm

 

larger arc      pi x d  x 50/360  = pi x 16 x 50/360 cm

 

Add the reds to get total perimeter................

 Mar 3, 2020
edited by ElectricPavlov  Mar 3, 2020
 #2
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thank you soooo much smiley

Guest Mar 3, 2020
 #3
avatar+25917 
0

You're welcome!  cheeky

ElectricPavlov  Mar 3, 2020

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