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  • Subjects
  • Mathematics CBSE
  • Class 9
  • Surface Areas and Volumes

Surface Area of a Sphere and Hemisphere

Theory

1. Surface area of a sphere
2. Surface area of a hemisphere
3. Example problem of a sphere
4. Example problem of a hemisphere

Exercises

1. Say true or false

Difficulty: easy

2
2. Find the radius of a sphere

Difficulty: easy

3
3. Find the diameter of the sphere

Difficulty: easy

3
4. Find the radius of the hemisphere

Difficulty: easy

3
5. Calculate the surface areas of a hemisphere

Difficulty: medium

4
6. Find the radius and surface area of a hemispherical solid

Difficulty: medium

3
7. Determine the cost of tin-plating the hemispherical bowl

Difficulty: medium

4
8. Find the ratio of surface area of the balloons

Difficulty: medium

4
9. How much money needed to buy the cloth

Difficulty: medium

4
10. Evaluate the cost of manufacturing the footballs

Difficulty: medium

4
11. Complete the table

Difficulty: hard

6
12. Calculate the surface area and radius of the hemispherical glass dome

Difficulty: hard

5
13. Find the increased percentage in surface area

Difficulty: hard

4

Tests

1. Training test

Difficulty: medium

9
2. Training test

Difficulty: medium

10

Teacher manuals

1. Methodical recommendation

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