Question Paper
Class / Subject: Class 9 (ICSE) · Mathematics
Chapter: Chapter 21 — Chapter 21: Solids (Surface Area and Volume of 3-D Solids)
Time Allowed: 32 minutes
Max Marks: 16
1. What is the volume formula for a cylinder? [1]
(A) π × radius² × height
(B) 2 × π × radius × height
(C) (4/3) × π × radius³
(D) (1/3) × π × radius² × height
2. What is the curved surface area formula for a cylinder? [1]
(A) 2 × π × radius × height
(B) π × radius² × height
(C) 4 × π × radius²
(D) (1/3) × π × radius² × height
3. What is the volume formula for a sphere? [1]
(A) (4/3) × π × radius³
(B) π × radius² × height
(C) 4 × π × radius²
(D) (1/3) × π × radius² × height
4. What is the surface area formula for a sphere? [1]
(A) 4 × π × radius²
(B) (4/3) × π × radius³
(C) π × radius² × height
(D) 2 × π × radius × height
5. What is the volume formula for a cone? [1]
(A) (1/3) × π × radius² × height
(B) π × radius² × height
(C) (4/3) × π × radius³
(D) 4 × π × radius²
6. What is the volume of a cylinder with radius 3cm and height 10cm (π≈3.14)? [1]
(A) 282.6 cubic cm
(B) 94.2 cubic cm
(C) 30 cubic cm
(D) 300 cubic cm
7. Why learn these solid formulas? [1]
(A) For real-world capacity and material problems
(B) No reason
(C) It's not useful
(D) Only for tests
8. What real-life object might use cone volume? [1]
(A) An ice cream cone or funnel
(B) A cube-shaped box
(C) A flat piece of paper
(D) A straight line
9. What is the volume formula for a cylinder? [1]
(A) π × radius² × height
(B) 2 × π × radius × height
(C) (4/3) × π × radius³
(D) (1/3) × π × radius² × height
10. What is the curved surface area formula for a cylinder? [1]
(A) 2 × π × radius × height
(B) π × radius² × height
(C) 4 × π × radius²
(D) (1/3) × π × radius² × height
11. What is the volume formula for a sphere? [1]
(A) (4/3) × π × radius³
(B) π × radius² × height
(C) 4 × π × radius²
(D) (1/3) × π × radius² × height
12. What is the surface area formula for a sphere? [1]
(A) 4 × π × radius²
(B) (4/3) × π × radius³
(C) π × radius² × height
(D) 2 × π × radius × height
13. What is the volume formula for a cone? [1]
(A) (1/3) × π × radius² × height
(B) π × radius² × height
(C) (4/3) × π × radius³
(D) 4 × π × radius²
14. What is the volume of a cylinder with radius 3cm and height 10cm (π≈3.14)? [1]
(A) 282.6 cubic cm
(B) 94.2 cubic cm
(C) 30 cubic cm
(D) 300 cubic cm
15. Why learn these solid formulas? [1]
(A) For real-world capacity and material problems
(B) No reason
(C) It's not useful
(D) Only for tests
16. What real-life object might use cone volume? [1]
(A) An ice cream cone or funnel
(B) A cube-shaped box
(C) A flat piece of paper
(D) A straight line