320 square inches
The answer depends on the units used for 16 and 20. It should be blindingly obvious to anybody that 16 ft x 20 ft and 16 cm x 20 cm, for example, will give very different answers.
There are 144 square inches in a square foot. This calculates out to be 5,040 square inches.
864 square inches.
32,400 square inches.
3 inches
2
A 16x20 poster is 16 inches wide and 20 inches tall.
The standard size of a 16x20 photo is 16 inches by 20 inches.
16x20
3,444.45133 square feet.
The answer depends on the units used for 16 and 20. It should be blindingly obvious to anybody that 16 ft x 20 ft and 16 cm x 20 cm, for example, will give very different answers.
1,296 square inches.
There are 144 square inches in a square foot. This calculates out to be 5,040 square inches.
A square of 17.5 inches by 17.5 inches is 2.13 square feet.
10,656 square inches.
21,600 square inches.
288 square inches.