Find a~ × b~ for a~ = 4ˆı and b~ = 4ˆı + 8 ˆ. 1. 32 ˆk 2. 32 ihat 3. 4ˆı + 8 ˆk 4. 32 ˆ 025 (part 2 of 3) 10.0 points find a~ × b~ for a~ = 5ˆı and b~ = 5ˆı + 8 ˆk. 1. 40 ˆk 2. −40 ˆ 3. 4ˆı 4. 40 ˆ 026 (part 3 of 3) 10.0 points find a~ ×b~ for a~ = 3ˆı+9 ˆ and b~ = 2ˆı+