Question

A wooden toy is in the form of a cone surmounted on a hemisphere. The diameter of the base of the cone is 6 cm and its height is 4 cm . Find the cost of painting the toy at the rate of ₹ 5 per 100 cm² .​

Answer 1

r=6/2=3cm

first find l=√h²+r²

=√16+9

=√25

=5cm

Step-by-step explanation:

suface area

= CSA of cone and CSA of hemisphere

=22/7*3*5+2*22/7*3*3

=47.14+56.57

=103.71cm²

cost = 103.71*5/100

=5.2 rupees