Math, asked by NiharikaBaghel, 1 day ago

30 circular plates , each of radius 14cm and thickness 3 cm are placed one above the other to form a cylindrical solid. Find its curved surface area.​

Answers

Answered by PharohX
3

Step-by-step explanation:

Given:-

Radius of plate = 14 cm

Height of 30 plates = 30× 3 = 90 cm

Now

 \sf \: Curved \:  Surface  \: area \:  of  \: Cylinder  = 2\pi rh

 \sf \:  =  \: 2 \times  \frac{22}{7}  \times 14 \times 90 \\

 \sf \:  =  \: 2 \times  \frac{22}{ \cancel7}  \times  \cancel{14 } \:  \: 2\times 90 \\

 \sf \:  = 7920 \:  {cm}^{2}

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