Processing math: 58%

NECO Past Questions and Answers - Page 150

746.

The surface area of a sphere is 616m2. what is the volume of-the sphere (correct to two significant figures)? (take π = 3.142)

A.

14 cm $^3$

B.

210 cm $^3$

C.

1,400 cm $^3$

D.

2,100 cm $^3$

E.

4,300 cm $^3$

View answer & explanation

Correct answer is C

$Surface area (A) = 4\pi r^{2} = 616m^{2}$

solving, we have

$r = 7m$

$Volume = \frac{4}{3}\pi r^{3}$

$Volume = \frac{4\times 3.142 \times 7^{3}}{3}$

$Volume = \frac{4310.824}{3}$

= $1436.941m^{3} \approxeq 1400m^{3}(2 sig. fig)$

747.

In an acute angle-triangle XYZ, XZ = 9cm, YZ = 11cm and ∠XZY = 35° Calculate ∠YXZ, correct to the nearest degree.

A.

57°

B.

45°

C.

33°

D.

16°

E.

89°

View answer & explanation

Correct answer is B

No explanation has been provided for this answer.

748.

Find the value of x in the equation: 9x = 729

A.

81

B.

27

C.

18

D.

9

E.

3

View answer & explanation

Correct answer is A

No explanation has been provided for this answer.

749.

Simplify $\sqrt{6a} \times \sqrt{576a^6}$

A.

± 16a2

B.

± 16a

C.

± 14a2

D.

± 12a2

E.

± 12a

View answer & explanation

Correct answer is D

No explanation has been provided for this answer.

750.

Two beads are drawn at random, one after the other, with replacement, from a box containing 5 red and 7 white identical beads. What is the probability that the beads are the same colour

A.

$\frac{119}{144}$

B.

$\frac{95}{144}$

C.

$\frac{37}{72}$

D.

$\frac{49}{144}$

E.

$\frac{1}{6}$

View answer & explanation

Correct answer is C

No explanation has been provided for this answer.

NECO 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

Abstract Reasoning Questions and Answers

Situational Judgement Questions and Answers

Quantitative Reasoning Questions and Answers

Puzzles Questions and Answers

Microsoft Office Questions and Answers

Verbal Reasoning Questions and Answers

Personality Test

Nigeria General Knowledge Questions and Answers

Typing Speed and Accuracy Test

Logical Reasoning Questions and Answers

Data Interpretation Questions and Answers

Numerical Reasoning Questions and Answers

View latest jobs in Nigeria today