Question 15
Mensuration of SolidsThe internal and external radii of a hemispherical bowl are 3cm and 4cm respectively. What is the volume of material used in making the bowl?
- A.(148/3)π cm3
- B.(74/3)π cm3
- C.(54/3)π cm3
- D.174π cm3
Show the answer and explanation
Answer: B ((74/3)π cm3)
Explanation
Volume = ⅔π(R³ − r³) = ⅔π(64 − 27) = ⅔π × 37 = (74/3)π cm³.