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 .
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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
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