Outer contact of circles

Construct a circle k1 (S1; 1.5 cm), k2 (S2; 2 cm), and K3 (S3; 2.5 cm) so that they are always two outer contacts. Calculate the perimeter of the triangle S1S2S3.

Final Answer:

o =  12 cm

Step-by-step explanation:

r1=1.5 cm r2=2 cm r3=2.5 cm  o = d1+d2+d3 o=2 (r1+r2+r3)=2 (1.5+2+2.5)=12 cm



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