Answer:
Step-by-step explanation:
a). Total surface area of cylinder is defined by sum of curved surface area and surface area of the top and bottom.
Total surface area = 2πrh + 2πr²
Skateboarders use a half pipe structure which are not closed at the ends.
Therefore, curved surface of the half pipe = 
= πrh
b). If r = 2.5 m and h = 9 m,
Curved surface area of the half pipe = π(2.5)(9)
= 70.69 m²
≈ 71 m²
Answer:
The. Answer. C
Step-by-step explanation:
Answer:
The answer is H
Step-by-step explanation:
If the length of the rectangle is 5 inches shorter than the width and the perimeter is 40, 15 is the only option that fits.
<em>For your question the answer is B.</em>
<em> Hope this helps:)</em>
Answer:
a.
Step-by-step explanation:
at the end of the essay every one has to have its summary at the end.