Surface Areas and Volumes

Ncert Math Solutions Class 9th Chapter 13 Surface Areas and Volumes Exercise 13.8 Question 10
March 14, 2014  Author: Jashan
A capsule of medicine is in the shape of a sphere of diameter 3.5 mm. How much medicine (in ) is needed to fill this capsule?
Posted in : NCERT Solutions, Surface Areas and Volumes
Tags :
No Comments

Ncert Math Solutions Class 9th Chapter 13 Surface Areas and Volumes Exercise 13.8 Question 9
 Author: Jashan
Twenty seven solid iron spheres, each of radius r and surface area S are melted to form a sphere with surface area S′. Find the
(i) radius r ′ of the new sphere, (ii) ratio of S and S′.
Posted in : NCERT Solutions, Surface Areas and Volumes
Tags :
No Comments

Ncert Math Solutions Class 9th Chapter 13 Surface Areas and Volumes Exercise 13.8 Question 8
 Author: Jashan
A dome of a building is in the form of a hemisphere. From inside, it was whitewashed at the cost of Rs 498.96. If the cost of whitewashing is Rs 2.00 per square metre, find the
(i) inside surface area of the dome, (ii) volume of the air inside the dome.
Posted in : NCERT Solutions, Surface Areas and Volumes
Tags :
No Comments