In a pa projection of the chest being used for cardiac evaluation, the heart measures 15.2 cm between its widest points. if the magnification factor is known to be 1.3, what is the actual diameter of the heart?

a. 9.7 cm
b. 11.7 cm
c. 19.7 cm
d. 20.3 cm

Determine the change in width a, height b, thickness t when a plate is subjected to the uniform distributed load and is made of material having modulus of elasticity e=230 gpa and poisson's ratio ν=1/3. given : a=400 mm and b= 300 mm also the uniformly distributed load in downward y direction of plate is 2 mn/m and in the positive x direction is 3 mn/m and t=20 mm