HELP PLZ FILL IN THE BLANK AND EXPLAIN the missing dimension. Use the scale 1:5

Item Model Actual
Bicycle wheel Diameter: __in Diameter: 2 ft

Uestion 1(multiple choice worth 5 points) (05.02)alex wants to paint one side of his skateboard ramp with glow-in-the-dark paint, but he needs to know how much area he is painting. calculate the area of the isosceles trapezoid. isosceles trapezoid with top base 12 feet, bottom base of 18 feet, and height of 6 feet. 72 ft2 84 ft2 90 ft2 108 ft2

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota

Simplify using positive exponents only.