Question

# A circle has a diameter of 42 cm. What would be its circumference ? 120 cm210 cm100 cm132 cm

Solution

## The correct option is D 132 cmWe know that the circumference of the circle is given by 2πr,  where r is the radius of the circle. i.e., Circumference=2πr=π×(2r)                                 =π× diameter                                 =227×42                                 =132 cm

Suggest corrections