Question

Around the car park, cylindrical concrete bollards are going to be placed. Volume of a cylinder: V = area of the base x height V = πr2h π = 3.14

Answer 1

Step-by-step explanation:

V=πR 2 H,π(R+x) 2 H=πR 2 (H+x);R 2 H+2RxH+x 2 H=R 2 H+R 2 x;2RxH+x 2 H=R 2 x; since x=0,2RH+xH=R 2 ;x= HR 2 −2RH For R=8 and H=3,x= 316