Four identical cylindrical chalk-sticks, each of radius r = 0.5 cm and length…
GATE · 2024 · EC · General Aptitude
Four identical cylindrical chalk-sticks, each of radius r = 0.5 cm and length l = 10 cm, are bound tightly together using a duct tape as shown in the following figure.
The width of the duct tape is equal to the length of the chalk-stick. The area (in cm2) of the duct tape required to wrap the bundle of chalk-sticks once, is
- A.
20 (4 + π)
- B.
20 (8 + π)
- C.
10 (8 + π)
- D.
10 (4 + π)
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