What part of a ditch 48m long 16.5 broad and 4m deep can be filled by the earth got by digging a cylindrical tunnel of diameter 4m and length 56m?
A. 1/9
B. 2/9
C. 7/9
D. 8/9
A. 1/9
B. 2/9
C. 7/9
D. 8/9