• +91 9971497814
  • info@interviewmaterial.com

Surface Areas and Volumes Ex-13.2 Questions Answers


Question 1 :

A solid is in theshape of a cone standing on a hemisphere with both their radii being equal to 1cm and the height of the cone is equal to its radius. Find the volume of thesolid in terms of π.

Answer 1 :

Question 2 :

Rachel, anengineering student, was asked to make a model shaped like a cylinder with twocones attached at its two ends by using a thin aluminum sheet. 

Answer 2 : The diameter of the model is 3 cm and its length is 12 cm. If each cone has a height of 2 cm, find the volume of air contained in the model that Rachel made. (Assume the outer and inner dimensions of the model to be nearly the same.)

Question 3 : A Gulab jamun contains sugar syrup up to about30% of its volume. Find approximately how much syrup would be found in 45 Gulabjamuns,

Answer 3 :  each shaped like a cylinder with two hemispherical ends with length 5 cm and diameter 2.8 cm (see figure).