A square inch is 1 in x 1in or 2.5 cm x 2.5 cm.
Pounds per square inch
5 Pounds per Square Inch
I assume you mean a 4 x 2 square tube that is loaded in the direction of the 4 inch dimension; then it is stronger than a 4 inch channel with flange width of 2 inches loaded in the direction of the 4 inch dimension, because the square tube has more inertia
Ksi-One thousand pounds per square inch
Assume a small piston (one square inch area) applies a weight of 1 lbs. to a confined hydraulic fluid. That provides a pressure of 1 lbs. per square inch throughout the fluid. If another larger piston with an area of 10 square inches is in contact with the fluid, that piston will feel a force of 1 lbs/square inch x 10 square inches = 10 lbs. So we can apply 1 lbs. to the small piston and get 10 lbs.
Compared to a square inch, it's pretty big.
4.123" X 4.123" =17sq"
144 times as big.
A square inch is a unit of area measurement which is equal to a square measuring one inch on each side. When converted, 350 square inches is equal to 0.225806 square meter.
a nine inch circular dinner plate is about 64 square inches
One square inch is a square that is 1 inch wide and 1 inch tall.
Square Inch is bigger. Since an inch is 2.54 centimetes, a square inch is 2.54 square centimeters.
2.7 square centimeters is 0.42 square inches.
They can be 1/8 inch diameter and 1/2 inch long up to 1 inch by 6 inch depending on what they are protecting. Screw in are all the same size but different amps. Flat plug in ones for cars can be 1/2 inch square up to 1 inch square for main fuses.
You can't. Square inch is a measure of area and inch is a measure of length.
1 square ft= 144 square inch
The answer depends on where the square inch is!