A bathtub contains 15 gallons of water. The circular drain opening of the tub has a radius of 21 mm. What is the approximate circle circumference of the drain opening?

A bathtub contains 15 gallons of water The circular drain opening of the tub has a radius of 21 mm What is the approximate circle circumference of the drain ope class=

Respuesta :

using C=2PIr

C = 2 * 3.14 * 21 = 131.88

 round to 132 mm

Answer is B