Answer:
B) 0.94 mm
Step-by-step explanation:
(For simplicity sake, X(y) means the X of rectangle y, A = area, w = width, h = height) (w * h = A)
Givens: A(a) = 8 * A(b), w(a) = 1/2 * w(b), h(a) = 15 mm
Substitution: w(a) * h(a) = 8 * A(b)
Substitution: 1/2 * w(b) * 15 = 8 * A(b)
Divide: 1/2 * 15/8 = h(b) --> A(b)/w(b) = h(b) because of the area of the rectangle formula
h(b) = 15/16 = 0.9375 ≈ 0.94 mm
