1. An icosahedron is a Platonic solid with a surface thatconsists of 20 equilateral triangles. By what factor does thesurface area of an icosahedron increase as the side length ofeach triangle doubles from a unit to 2a units, if a = 3.8? Round your answer to three decimal places.

2.

Let A be the area under y : em and above the xaxis, on [Ca]. Let B be the area under y : em and above the x-axis, on [0,b]. B is 1.7 times A. What is b in terms of a? a. b = |n(e"a + 0.30) b. b = |n(1.7 + 0.70) c. b = |n(1.7e'\\a +1.7) d. b = |n(1.7e'\\a + o_7000) e. a = |n(1.7e"b +1) Suppose that for each i such that 1