Answer:

Step-by-step explanation:
we know that
The lateral area of the cone is equal to

where
r is the radius of the base
l is the slant height
we have

Applying the Pythagoras Theorem find the slant height

substitute in the formula

Sorry for my bad handwriting a notebook lol
Answer:
Step-by-step explanation:
11.9 divided by 7 = 1.7
She uses 1.7 yards per apron
-4x-8+6=5-3x-3 distribute
-4x-2=2-3x combine like terms
-4=x combine like terms with addition and subtraction
x=-4 final answer