1) Area of circle is a) πr² b) 2πr c) πr d) π²r 2) Circumference of the circle a) 2πr b) πr² 3) Length of the boundary of a circle is a) Diameter b) Radius c) Circumference d) None 4) Radius and tangent of the circle are always a) Perpendicular b) Parallel c) No relation 5) Which of the following is double the radius a) Tangent b) Diameter c) Circumference

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