slant height

6^{2}+8^{2}=(Hs)^{2} where Hs is the slant height

36+64=(Hs)^{2}

100=(Hs)^{2}

Hs=10 m

volume

V=(1/3)*pi*r^{2}*h

V=(1/3)*3.14*6^{2}*8

V=(1/3)*3.14*36*8

V=3.14*12*8

V=3.14*96

V=301.44 cubic meters

surface area

lateral surface area=(1/2)*circumference*slant height

lateral surface area=(1/2)(2*pi*r)*10

lsa=pi*6*10

lsa=3.14*60

lsa=188.4 sq m

now find the area of the circular base

A=pi*r^{2}

A=3.14*6^{2}

A=3.14*36

A=113.04 sq m

now add the lateral surface area and the area of the base

total surface area=188.4+113.04

total surface area=301.44 sq m