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The latreal surface area of a …

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The latreal surface area of a hollow cylinder is 4224 cm².It is cut along it's heights and formed a rectangular sheet of width 33cm.Find the perimeter of rectangular sheet

Posted by Vaibhav Mishra 7 years, 1 month ago

CBSE > Class 08 > Mathematics

1 answers

Mehak Yadav 7 years, 1 month ago

Circumference of cylinder=length of the rectangle Height=breath of rect. Lateral surface area of cylinder = 2πrh 2πr×33 = 4224cm2 2πr= 4224÷33 2πr=128cm 2πr= circumference of circle 2πr = length Length= 128cm Perimeter of rectangle = 2( l+ b ) 2(128+33cm ) 2(161) =322cm

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