Question

Calculate the volume of a frustum cone given below: (Use $\pi$ = 3.14)

• A. $113,829.168$ m${}^3$
• B. $2873.10$ m${}^3$
• C. $123,829.168$ in${}^3$
• D. $133,829.168$ in${}^3$

Answer 1

The correct option is B $2873.10$ m${}^3$

Volume of frustum $=\frac{1}{3}\pi (R^2+r^2+Rr)\times h$

$=\frac{1}{3}\times 3.14({\left(2.5\right)}^2+2^2+2.5\times 2)\times 180$

$=188.40(6.25+4+5)$

$=188.40\times 15.25=2873.10m^3$