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 lenght 25 cm and with a radius of 3.5 cm ? Plz help me with the above quetion .
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Answered by
43
Radius of the base of the cylindrical kaleidoscope (r) = 3.5 cm.
Height (length) of kaleidoscope (h) = 25 cm.
Area of chart paper required = curved surface area of the kaleidoscope
= 2πrh
=2×22 /7×3.5× 25 cm 2
= 550 cm2
Answered by
8
Answer:550cm^2
Step-by-step explanation:
Radius of the base of the cylindrical kaleidoscope (r)=3.5cm.
Height (length) of kaleidoscope (h)=25cm.
Area of chart paper required=curved surface area of the kaleidoscope
=2πrh
=2x22/7x3.5cmx25cm
=550cm^2
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