9th Maths 13.2
Chapter 13 Surface Areas and Volumes NCERT Class 9th solution of Exercise 13.1 NCERT Class 9th solution of Exercise 13.3 NCERT Class 9th solution of Exercise 13.4 NCERT Class 9th solution of Exercise 13.5 NCERT Class 9th solution of Exercise 13.6 NCERT Class 9th solution of Exercise 13.7 NCERT Class 9th solution of Exercise 13.8 NCERT Class 9th Maths Projects Exercise 13.2 Assume π=227, unless stated otherwise. Q1. The curved surface area of a right circular cylinder of height 14cm is 88cm2. Find the diameter of the base of the cylinder. Sol. : Given: Height of Cylinder is h=14cm, Area=88cm2 To Find: Diameter of the base of Cylinder. Solve: Let Radius is r Curved Surface Area=2πrh 88=2×227×⋊ r=(88times7)/(2times22times14) r=1 Diameter of the base=2r=2times1=2cm Answer: Diameter of the base 2cm. Q2. It is required to make a closed cylindrical tank of height 1m and base diameter 140cm from a metal sheet. How many square meters of the shee...