A circular well with a diameter of 6 metres , is dug to a depth of 24 metres. What is the volume of the earth dug out?  Choose the correct choice from the following answers.
A) 678.6 m 3 B) 36 m 3 C) 40 m 3 D) 44 m 3 E) none

Rationale: "solution volume = π r 2 h ‹ = › ( 22 / 7 × 3 × 3 × 24 ) m 3 ‹ = › 678.6 m 3 . answer a"
Answer: A