# Chapter 7: Volume & Surface Area - Math Mcqs for Grade 7 - Set 1

1)   Non-right pyramids are called

a. Oblique Pyramids
b. Tetrahedron based pyramids
c. Pentagon based pyramids
d. Hexagon based pyramids
 Answer  Explanation ANSWER: Oblique Pyramids Explanation: No explanation is available for this question!

2)   The volume of cone with surface area 7cm and height 14cm is

a. 120cm³
b. 160cm³
c. 180cm³
d. 200cm³
 Answer  Explanation ANSWER: 180cm³ Explanation: No explanation is available for this question!

3)   A cone has a circular base of radius 6m and volume 84π m³. The height of cone is

a. 7m
b. 6m
c. 8m
d. 8m
 Answer  Explanation ANSWER: 7m Explanation: No explanation is available for this question!

4)   If a hemisphere has a curved surface area of 175cm² its radius is

a. 5.28cm
b. 3.45cm
c. 28.5cm
d. 45.3cm
 Answer  Explanation ANSWER: 5.28cm Explanation: No explanation is available for this question!

5)   VPQRS is rectangle based pyramid where PQ = 30cm, QR = 20cm and volume is 2000cm³, the height is

a. 20cm
b. 40cm
c. 10cm
d. 30cm
 Answer  Explanation ANSWER: 10cm Explanation: No explanation is available for this question!

6)   The surface area of sphere is

a. 2πr
b. 4πr²
c. 2πr²
d. 6πr²
 Answer  Explanation ANSWER: 4πr² Explanation: No explanation is available for this question!

7)   A cone with a circular base of radius 5cm and height 12cm has surface area of

a. 204cm²
b. 210cm²
c. 80cm²
d. none of above
 Answer  Explanation ANSWER: 204cm² Explanation: No explanation is available for this question!

8)   The volume of sphere is

a. (4/3)πr³
b. 3⁄4rl
c. 3.414ra
d. None of above
 Answer  Explanation ANSWER: (4/3)πr³ Explanation: No explanation is available for this question!

9)   The surface area of cone is

a.
b. πa²
c. πrl
d. none of above
 Answer  Explanation ANSWER: πrl Explanation: No explanation is available for this question!

10)   If the volume of sphere is 850m³ then its radius and surface area are

a. 6m, 450m²
b. 5m, 560m²
c. 2m, 780m²
d. 5.88m, 434m²
 Answer  Explanation ANSWER: 5.88m, 434m² Explanation: No explanation is available for this question!

11)   A solid with polygonal base and vertex is a

a. Diamond
b. Pyramid
c. Triangle
d. Dice
 Answer  Explanation ANSWER: Pyramid Explanation: No explanation is available for this question!

12)   Total surface area of pyramid is equal to

a. total area of all faces
b. total area of base
c. length of slant edge
d. none of above
 Answer  Explanation ANSWER: total area of all faces Explanation: No explanation is available for this question!

a. 10cm
b. 9cm
c. 11cm
d. 8cm
 Answer  Explanation ANSWER: 11cm Explanation: No explanation is available for this question!

14)   A solid with a vertex and a base that is formed by a simple closed curve is a

a. Triangle
b. Cone
c. Pyramid
d. Dice
 Answer  Explanation ANSWER: Cone Explanation: No explanation is available for this question!