1.

7. A cardboard of dimensions 10 cm x 5 cm is rotated about the 5 cm side and formed a cylinder Findthe volume and total surface area of the cylinder

Answer»

Dimensions of cylinder:Height = 5cmCircumference = 10cm=> 2*(22/7)*r = 10=> r = 35/22 cm.

Volume = (22/7)*r*r*h= (22/7)*(35/22)*(35/22)*5= 39.77 cubic cm.

Total Surface Area = 2*(22/7)*(35/22)*5 + 2*(22/7)*(35/22)*(35/22)= 50 + (350/22)= 65.91 sq cm



Discussion

No Comment Found