Question

please find my question attached.

Answer 1

find the volume of the triangle thing:

area of surface * length
1/2*2*3*sin65 *3.5 = 9.5



find the width of the rectangle

using cosine rule:

x^2 = 4+9-12cos65
x=2.8

volume of reactangle:
2.8*5.5*3.5=53.9

volume of the total thing:
53.9+8.5

Answer 2

ops last line 53.9 + 9.5
sorry.