Looks good to me. Calculation is correct. Although you might want to add to #1 your description; that the width of the rectangle is the circumference of the circle (w = 2πr) and that you add the surfaces together to get the total surface area.
total surface area = area of rectangular part + area of circular parts
SA = 2πrL + 2πr²
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Your answer would be 70.434! Sorry if its wrong, but im sure its right!
I'd wait for somebody else to answer just to confirm!
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3 Mph
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Have a nice day!
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what chart
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