2010 · Q76
A semi circular thin sheet of a metal of diameter 28 cm is bent and an open conical cup is made. What is the capacity of the cup ?
Elementary MathematicsMensuration
- A(1000/3)√3 cm³
- B300√3 cm³
- C(700/3)√3 cm³
- D(1078/3)√3 cm³
Explanation
r=7,h=7√3,V=(343/3)π√3=(1078/3)√3 with π=22/7.