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Jason designed an arch made of wrought iron for the top of a mall entrance. the 11 segments between the two concentric circles are each 1.25 m long. find the total length of wrought iron used to make the structure. round the answer to the nearest meter. show your work brainly

Respuesta :

diameter of the bigger semi-circle is 15 m

circumference of the bigger semi-circle = πd = 15π


diameter of the smaller semi-circle = 15 - 2(1.25) = 15 - 2.5 = 12.5 m

circumference of the smaller semi-circle = πd = 12.5π m


Total length of the segments between the two circles = 11(1.25) = 13.75 m


Total length of wrought iron used = 15π + 12.5π + 13.75 = 100 m

Hope this helps!