see the pic attached

Remaining "How Did I Do?" Uses: 1/3 An animated short film shows an equilateral triangle whose dimensions vary with time. Assume the triangle's sides have an instantaneous rate of growth of 4 cm/s at the moment the triangle's area is 4\\3 cm . The goal is to determine at what rate the area of the triangle is growing at that same moment. To solve this problem, let's denote by a the common length of the sides of the triangle in cm, A its area in cm, and t the time in seconds (s). (a) Express A as a function of a . A = (sqrt(3)"x /2 cm2