Find the volume, curved surface area and the total surface area of a cone having base radius 35 cm and height 84 cm.
Given,
Radius of the cone = 35cm
Height of the cone = 84cm
Curved surface area = πrl
So, we need to find out the l;
l = slant height
l = 91cm
Curved surface area = 
= 110 × 91 = 10010cm2
Volume of the cone = 
= 
= 88 × 1225
= 107800cm2
Total surface area = πrl + πr2
= 10010 + 3850 = 13860
Total surface area = 13860cm2
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