Answer :


From the figure,


Radius of the hemisphere = 8 cm


Height of the cone = 15 cm


Lateral length of the cone = √(h2 + r2) = √(152 + 82) = 17 cm


Curved surface area of hemisphere = 2πr2


Curved surface area of the cone = πrl


Total curved surface area of the toy = 2πr2 + πrl


Total curved surface area of the toy = 2 × (22/7) × 82 + (22/7) × 8 × 17


Total curved surface area of the toy = 829.714 cm2


Cost of painting the toy at Rs. 7 per 100 cm2


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

The volumes of thRS Aggarwal & V Aggarwal - Mathematics

If the surface arRS Aggarwal & V Aggarwal - Mathematics

<span lang="EN-USRS Aggarwal & V Aggarwal - Mathematics

<span lang="EN-USRS Aggarwal & V Aggarwal - Mathematics

<span lang="EN-USRS Aggarwal & V Aggarwal - Mathematics

<span lang="EN-USRS Aggarwal & V Aggarwal - Mathematics