Double Square Inch (abbreviations: in4, or in 4): is a unit in the (British) imperial and United States customary systems of measurement of area moment of inertia, a geometrical property of an area which reflects how its points are distributed with regard to an arbitrary axis.
Double Square Foot (abbreviation: ft4): is an imperial unit and U.S. customary unit (non-SI, non-metric) of area moment of inertia, a geometrical property of an area which reflects how its points are distributed with regard to an arbitrary axis.
How to Convert Double Square Inches to Double Square Feet
Example: How many double square feet are equivalent to 68.12 double square inches?
As;
1 double square inches = 4.8224537041667E-5 double square feet
68.12 double square inches = Y double square feet
Assuming Y is the answer, and by criss-cross principle;
Y equals 68.12 times 4.8224537041667E-5 over 1
(i.e.) Y = 68.12 * 4.8224537041667E-5 / 1 = 0.0032850554632783 double square feet
Answer is: 0.0032850554632783 double square feet are equivalent to 68.12 double square inches.
Practice Question: Convert the following units into ft4:
N.B.: After working out the answer to each of the next questions, click adjacent button to see the correct answer.
( i ) 24.32 in4
( ii ) 5.17 in4
( iii ) 25.39 in4
