Double Square Millimeter (abbreviations: mm4, or mm 4): is the SI derived unit 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 Millimeters to Double Square Feet
Example: How many double square feet are equivalent to 84.78 double square millimeters?
As;
1 double square millimeters = 1.1588438533152E-10 double square feet
84.78 double square millimeters = Y double square feet
Assuming Y is the answer, and by criss-cross principle;
Y equals 84.78 times 1.1588438533152E-10 over 1
(i.e.) Y = 84.78 * 1.1588438533152E-10 / 1 = 9.8246781884064E-9 double square feet
Answer is: 9.8246781884064E-9 double square feet are equivalent to 84.78 double square millimeters.
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 ) 67.87 mm4
( ii ) 21.03 mm4
( iii ) 25.08 mm4
