Problem 2
The w dth of a w ndow, the upper part of wh ch s
n the form of a parabola, s 48 cm, the he ght s
90 cm at the s des and 115 cm at the apex. 3 ron
bars w ll be attached to th s w ndow at equal
ntervals as shown n the f gure. F nd the total
length of the ron bars that should be used for
th s work.