Please help me to show my work

A96 cubic feet
B120 cubic feet
C192 cubic feet
D240 cubic feet

Please help me to show my work A) 96 cubic feet B) 120 cubic feet C) 192 cubic feet D) 240 cubic feet class=

Verified Answer :

D240. total area is 336. garden area is 96. subtract garden area from cement area to get walkway area. 336-96=240.