a) A cone has a radius of 7.2cm and a height of 9.2cm. By rounding all numbers to the nearest whole number, work out an estimate for the volume of the cone.

(Answer here)[tex]cm^{3}[/tex] (2)

b) A cone has a volume of 98[tex]cm^{3}[/tex]. The radius of the cone is 5.16cm. Work out an estimate for the height of the cone.

(Answer here)cm (2)

Hint: Volume of cone [tex]\frac{1}{3}[/tex][tex]\pi[/tex][tex]r^{2}[/tex]h