Circumference 6555

The square picture has a circumference of 28 dm, and its frame is 7 cm wide. What is the outer circumference of the frame?

Correct answer:

o =  33.6 dm

Step-by-step explanation:

o1=28 dm s=7 cm dm=7:10  dm=0.7 dm  a1=o1/4=28/4=7 dm a=a1+2 s=7+2 0.7=542=8.4 dm  o=4 a=4 8.4=33.6 dm



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