The total surface area of a solid hemisphere of diameter 14 cm, is :
Pick one: A) 462 cm ² B) 530 cm ² C) 1345 cm ² D) 1788 cm ² E) none

Rationale: sol . total surface area = 3 ∏ r ² = [ 3 * 22 / 7 * 7 * 7 ] cm ² = 462 cm ² answer a
Answer: A