A wooden toy is in the form of a cone surmounted on a hemisphere. The diameter of the base of the cone is 16cm and its height is 15cm. Find the cost of painting the toy at `R s .7\ p e r\ 100\ c m^2dot`

Explanation

Diameter of the cone, `d=16cm`

Radius of the cone, `r=8cm`

Height, `h=15cm`

Slant height, `l=sqrt(r^2+h^2)`

`l=sqrt(8^2+15^2)`

`l=17cm`

`therefore` Total Surface Area of the toy=`pirl+2pir^2`

=`22/7xx8xx17+2xx22/7xx8^2`

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