Q. 14.7( 6 Votes )

# Find the volume, curved surface area and the total surface area of a cone having base radius 35 cm and height 84 cm.

Answer :

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 = 10010cm^{2}

Volume of the cone =

=

= 88 × 1225

= 107800cm^{2}

Total surface area = πrl + πr^{2}

= 10010 + 3850 = 13860

Total surface area = 13860cm^{2}

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