Subject :IMO Class : Class 4

How many unit cubes are needed to build the given solid?

(A) 34

(B) 36

(C) 32

(D) 28

please explain

Subject :IMO Class : Class 4

How many unit cubes are needed to build the given solid?

(A) 34

(B) 36

(C) 32

(D) 28

please explain