Question :- Savitri had to make a model of a cylindrical kaleidoscope for her science project. She wanted to use chart paper to make the curved surface of the Kaleidoscope. What would be the area of chart paper required by her, if she wanted to make a kaleidoscope of length 25cm with a 3.5cm radius.
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⭐ Solution ➠
- Radius Of The Base = 3.5cm.
- Height Of Kaleidoscope = 25cm.
Area Of Chart = C.S.A. Of Kaleidoscope.
C.S.A. = 2πrh.
➝ 2 × 22/7 × 3.5 × 25 cm²
➝ 550cm²
Hence, The Area Of Chart Paper = 550cm²
ADDITIONAL INFORMATION ➝
- C.S.A Of Cylinder = 2πrh.
- T.S.A Of Cylinder = 2πr(r + h).
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