Two measurements are indication of area. The area would be 144 square inches.
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A 12 inch square block is a sq ft, so 208.
160 sq ft = 160 * 12 *12 = 23,040 sq inches. Each block is 4 * 8 = 32 sq inches so number of blocks needed = 23,040 / 32 = 720.
about 16 cinder blocks
Assuming they are 8 inch*16 inch blocks, 144 square feet = 144*12*12 square inches. So number of blocks required = 144*12*12/(8*16) = 162
132