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Earn +20 ptsQ: Outer circle in football
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Is there an outer circle in football?
yes , there is a outer circle near the goal from where the goal is to be taken.
The equation of the inner circle is x2 plus y2 equals 9 The radius of the outer circle is twice the radius of the inner circle What is the equation of the outer circle?
x^2+y^2=36
Why is a circle round?
because in 1945, football players squished a football once and decided to name it a circle
The equation of the inner circle is x2 plus y2 equals 9 The radius of the outer circle is three times the radius of the inner circle What is the equation of the outer circle?
The radius of the inner circle is sqrt(9) = 3. The radius of the outer circle is therefore 3*3 = 9. The equation for the outer circle is then x^2 + y^2 = 9^2 = 81. (This is an application of Pythagoras' theorem a^2 + b^2 = c^2 in a right-angled triangle by the way)
What is the are of circle with radius 32.25mm?
If the radius of a circle is twice the diameter. The outer diameter of a circle the size of a circle. 32.25 mm = 1.27 inches
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