Answer please, tysvm!

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)

Does the construction demonstrate how to copy an angle correctly using technology a) yes the distance between points a and f was used to create circle h b) yes the distance between points f and g was used to create circle h c) no the distance between points a and f was used to create circle h d) no the distance between points f and g was used to create circle h

What is the surface area of a cube with the volume of 729 ft?