Answer:
a.
500x+0.04=y
400x+0.05=y
for percentages move decimal to the left twice
The formula for the lateral surface area of a right circular cone is:

where r is the radius of the base, and l is the slant height.
Plugging in the values we get:
Answer:
See picture attached
Step-by-step explanation:
I hope this helps you.
Please give me brainliest if it's correct