Plz help On this question!!

There's too much missing to answer most of these questions.

Question #3 can be answered using Heron's formula:  Area  =  sqrt( s·(s - a)·(s - b)·(s - c) )

1 )

Missing angle =  180 - 130  - 19  =   31°

Using  the Law of Sines

x / sin  130°  =   7 / sin 31°          where x  is  the side opposite the obtuse angle

x  =  7 sin 130°  / sin 31°   ≈  10.4 ft

2 )

Law  of Sines

x/ sin 19°   =  7 / sin 31°

x =  7 sin 19° / sin 31° = 4.425

Area  =

(1/2)  (x) (7)sin 130°

(1/2)(4.425) ( 7)  sin 130°   

11.86  ft^2

4 )   Let  the area  painted green  =   G

Let  the area  painted  blue  =  2G  =   area painted red

Area  painted red  =  [ ( 2G)  / ( G + 2G + 2G) ]  pi * 8^2   =  (2/5)pi * 8^2  =  25.6 pi  in^2  =

80.42  in^2