Jika a = 4 dan b = 7 c = (a2 +3b) -1. Berapakah (πc) /(b-a)

[tex]a = 4 \\ b = 7 \\ c = ( {a}^{2} + 3b) - 1 = ( {4}^{2} + 3.7) - 1 \\ \: \: \: = 36 \\ \\ \frac{\pi c}{b - a} = \frac{(3.14)(36)}{7 - 4} = 37.68[/tex]