A matchbox measures 4 cm × 2.5 cm × 1.5 cm. What will be the volume of a packet containing 12 such boxes?
Ncert Math Solutions Class 9th Chapter 13 Surface Areas and Volumes Exercise 13.4 Question 9
A right circular cylinder just encloses a sphere of radius r (see figure). Find
(i) surface area of the sphere,
(ii) curved surface area of the cylinder,
(iii) ratio of the areas obtained in (i) and (ii).
Ncert Math Solutions Class 9th Chapter 13 Surface Areas and Volumes Exercise 13.4 Question 8
A hemispherical bowl is made of steel, 0.25 cm thick. The inner radius of the bowl is 5 cm. Find the outer curved surface area of the bowl.
Ncert Math Solutions Class 9th Chapter 13 Surface Areas and Volumes Exercise 13.4 Question 7
The diameter of the moon is approximately one fourth of the diameter of the earth. Find the ratio of their surface areas.
Ncert Math Solutions Class 9th Chapter 13 Surface Areas and Volumes Exercise 13.4 Question 6
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