NCERT Class 9 Solutions: Surface Areas and Volumes (Chapter 13) Exercise 13.4 – Part 1

Download PDF of This Page (Size: 269K)

Q-1 . Find the surface area of a sphere of radius:

Solution:

Formula for calculating the surface area of sphere.

Surface Area of a Sphere

Formula for calculating the surface area of sphere.

  1. Radius of the sphere (r)

    Surface area

  2. Radius of the sphere (r)

    Surface area

  3. Radius of the sphere (r)

    Surface area

Q-2 Find the surface area of a sphere of diameter:

Solution:

  1. ( )

    Surface area

  2. ( )

    Surface area

    • 2

  3. ( )

    Surface area