Processing math: 100%

WAEC Mathematics Past Questions & Answers - Page 317

1,581.

A cylindrical container closed at both ends, has a radius of 7cm and height 5cm [Take π = 22/7]. What is the volume of the container?

A.

35cm³

B.

154cm³

C.

220cm³

D.

528cm³

E.

770cm³

View answer & explanation

Correct answer is E

Volume = $\pi r^2 h$

= $\frac{22}{7} \times 7^2 \times 5$

= $770 cm^3$

1,582.

A cylindrical container closed at both ends, has a radius of 7cm and height 5cm [Take π = 22/7]
Find the total surface area of the container

A.

35cm²

B.

154cm²

C.

220cm²

D.

528cm²

E.

770cm²

View answer & explanation

Correct answer is D

TSA of a cylinder = $2\pi r^2 + 2\pi rh$

= $2\pi r (r + h)$

= $2 \times \frac{22}{7} \times 7 (7 + 5)$

= $44 \times 12$

= $528 cm^2$

1,583.

If the radius of the parallel of latitude 30°N is equal to the radius of the parallel of latitude θ°S, what is the value of θ?

A.

75^o

B.

60^o

C.

45^o

D.

30^o

E.

0^o

View answer & explanation

Correct answer is D

$\theta_{1} = \theta_{2} = 30°$

1,584.

calculate the surface area of a sphere of radius 7cm [Take π = 22/7]

A.

86cm²

B.

154cm²

C.

616cm²

D.

1434cm²

E.

4312cm²

View answer & explanation

Correct answer is C

Surface area of a sphere = $4\pi r^2$

= $4 \times \frac{22}{7} \times 7 \times 7$

= $616 cm^2$

1,585.

A sector of a circle of radius 7cm has an area of 44cm². Calculate the angle of the sector correct to the nearest degree [Take π = 22/7]

A.

6^o

B.

26^o

C.

52^o

D.

103^o

E.

206^o

View answer & explanation

Correct answer is D

πr² = 360^o

44cm² = θ; ∴ θ =

44/πr²

x 360^o = 102.9^o = 103^o

WAEC Subjects

English Language

Agricultural Science

Physical Education

Further Mathematics

Literature in English

Islamic Religious Knowledge

Christian Religious Knowledge

Office Practice

Civic Education

Aptitude Tests

Spatial Reasoning Questions and Answers

Situational Judgement Questions and Answers

Microsoft Office Questions and Answers

Personality Test

Abstract Reasoning Questions and Answers

Logical Reasoning Questions and Answers

Numerical Reasoning Questions and Answers

Nigeria General Knowledge Questions and Answers

Data Interpretation Questions and Answers

Puzzles Questions and Answers

Verbal Reasoning Questions and Answers

Typing Speed and Accuracy Test

Quantitative Reasoning Questions and Answers

View latest jobs in Nigeria today