Question

The portion of a student’s ballpoint pen that contains the ink is a cylinder with a diameter of 0.400 cm and a height of 11.5 cm. If the ink lasts 7 weeks, what is the volume of ink that the student uses each week?

Answer choices are :

A) 0.21 cm 3

B) 0.92 cm 3

C) 1.84 cm 3

D) 12.9 cm 3

Answer 1

Hello!!

The correct answer is listed below:

A) 0.21 cm 3

B) 0.92 cm 3

C) 1.84 cm 3

D) 12.9 cm 3

Answer 2

Volume of a cylinder=pi*r^2*h Diameter=0.400, Radius=0.400/2=0.200 | V of cylinder=pi*(0.200)^2*11.5=1.444 now this remain for 7 weeks...to get ink used for 1 week just divide it by 7 =1.444/7=0.207 | The answer is A