A line passes through the point (0, –4) and has a slope of 2003-09-03-00-00_files/i0090000.jpg. What is the equation of the line
1 answer:
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Answer:
Part 1) The lateral area of the cone is
Part 2) The lateral surface area of the cylinder is
Part 3) The surface area of the crayon is
Step-by-step explanation:
Part 1) Find the lateral area of the cone
The lateral area of the cone is equal to
we have
substitute
Part 2) Find the lateral surface area of the cylinder
The lateral area of the cylinder is equal to
we have
substitute
Part 3) Find the surface area of the crayon
The surface area of the crayon is equal to the lateral area of the cone, plus the lateral area of the cylinder, plus the top area of the cylinder plus the bottom base of the crayon
<em>Find the area of the bottom base of the crayon</em>
where
r2 is the radius of the cylinder
r1 is the radius of the cone
substitute
<em>Find the area of the top base of the cylinder</em>
<em>Find the surface area</em>