Circle and rectangle

The circle describes a rectangle with sides of 11.7 cm and 175 mm. What is its length? Calculate the area of the circle described by this circle.

Correct answer:

x =  66.1333 cm
S =  348.0413 cm2

Step-by-step explanation:

a=11.7 cm b=175/10=235=17.5 cm u=a2+b2=11.72+17.5221.0509 cm r=u/2=21.0509/210.5254 cm x=2π r=2 3.1416 10.5254=66.1333 cm
S=π r2=3.1416 10.52542=348.0413 cm2

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See also our right triangle calculator.
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See also our trigonometric triangle calculator.

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