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1 answer:
As The Line 3x + y > 1 involves the inequality ( > ) :
✿ The Shaded Area of the Line 3x + y > 1 is Away from the Origin
✿ The Line 3x + y > 1 is represented by a Dotted Line
As The Line y ≤ x + 2 involves the inequality ( ≤ ) :
✿ The Shaded Area of the Line y ≤ x + 2 is Towards from the Origin
✿ The Line y ≤ x + 2 is represented by a Dark Line.
So, The Graph which fulfills the above Conditions is :
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Surface area of cylinder is given by area of circle + area of the rectangle that curved around the cylinder
Area of the base of the cylinder =
Area of the cylinder 'wall' = width × length =
×
=×
=
Note that the wall of the cylinder is in the shape of a rectangle. The width of the rectangle is the height of the cylinder. The length of the rectangle is the circumference of the circle base.
Surface area of cone is given by
where 
is the slanted height of the cone
SA of cone =
Hence total painted surface area is
Area of the base of the cylinder =
Area of the cylinder 'wall' = width × length =
Note that the wall of the cylinder is in the shape of a rectangle. The width of the rectangle is the height of the cylinder. The length of the rectangle is the circumference of the circle base.
Surface area of cone is given by
SA of cone =
Hence total painted surface area is