Diameter 82242

Around the circular pool with a diameter of 5.5 m is a circular wooden terrace with a width of 130 cm. What is the area size of this terrace?

Correct answer:

S =  27.7717 m2

Step-by-step explanation:

d=5.5 m x=130 cm m=130:100  m=1.3 m  r1=d/2=5.5/2=411=2.75 m r2=r1+x=2.75+1.3=2081=4.05 m  S1=π r12=3.1416 2.75223.7583 m2 S2=π r22=3.1416 4.05251.53 m2  S=S2S1=51.5323.7583=27.7717 m2



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