The ratio of the area and circumference of a circle of diameter `d` is (a)`d` (b) `d/2` (c)`d/4` (d) `2\ d`

The ratio of the area and circumference of a circle of diameter d is d(b)(d)/(2)(d)/(4)(d)2d

What is the area of a circle with diameter d?

The ratio of the perimeter (circumference) and diameter of a circle is (a) pi\ (b) 2pi (c) pi/2 (d) pi/4

If A is the area and C is the circumference of a circle, then its radius is (a) A/C (b) (2A)/C (c) (3A)/C (d) (4A)/C

The ratio of the perimeter (circumference) and diameter of a circle is pi( b) 2 pi(pi)/(2) (d) (pi)/(4)

Give the formula for the area of a circle in terms of the diameter d.

If A is the area and C is the circumference of a circle,then its radius is (A)/(C)( b) (2A)/(C)(3A)/(C) (d) (4A)/(C)

The length of the diagonal of a square is d units. The area of the square is (a) d^2 (b) 1/2d^2 (c) 1/4d^2 (d) 2d^2

A B C D is a square. E is the mid-point of B C and F is the mid-point of C D . The ratio of the area of triangle A E F to the area of the square A B C D is (a) 1 : 2 (b) 1 : 3 (c) 1 : 4 (d) 3 : 8

If the circumference and the area of a circle are numerically equal, then diameter of the circle is (a) pi/2 (b) 2pi (c) 2 (d) 4