How do I do this, can someone help me out.

Answer: Take half of 32 and use each of the "addends" (numbers that add up to the sum of 16 and use them as factors to find the area.
Step-by-step explanation:
16 = 15 +1 2(15 +1) =32 15 × 1 =15
16 = 14 + 2 2(14) + 2(2) = 32 14 ×2 =28
16 = 13 + 3 2(13 + 3) = 32 13 × 3 = 39
16 = 12 + 4 2(12 + 4) = 32 12 × 4 = 48
16 = 11 + 5 2(11 + 5) = 32 11 × 5 = 55
16 = 10 + 6 2(10 + 6) = 32 10 × 6 = 60
16 = 9 + 7 2(9 + 7) = 32 9 × 7 = 63
16 = 8 + 8 2( 8+ 8) = 32 8×8 = 64
I hope this helps you understand how this works.