Company logo

The company logo consists of a blue circle with a radius of 4 cm, which is an inscribed white square. What is the area of the blue part of the logo?

Correct result:

S =  18.2655 cm2

Solution:

r=4 cm u=2⋅ r=2⋅ 4=8 cm D=u=8=8 cm  D2=a2+a2  a=D/2=8/2=4 2 cm≐5.6569 cm  S1=π⋅ r2=3.1416⋅ 42≐50.2655 cm2 S2=a2=5.65692=32 cm2  S=S1−S2=50.2655−32=18.2655 cm2

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