Answer:
x= 56 degree
Step-by-step explanation:
sin x= opposite/ hypotenuse
sin x= 66/79
sin x=0.84
sin-1(0.84)= x
what are the expressions?
SEE BELOW
V=a²h/3=9² x 4/3= 81 x 4/3= 27 x 4 = 108 cm³