Mathematics questions and answers

Mathematics Questions and Answers

How good are you with figures and formulas? Find out with these Mathematics past questions and answers. This Test is useful for both job aptitude test candidates and students preparing for JAMB, WAEC, NECO or Post UTME.

3,136.

Which of the following is not necessarily sufficient for the construction of a triangle?

A.

Three sides

B.

Two sides and an included angle

C.

Two sides and a right angle

D.

Two sides and an angle

E.

Two angles and a side.

Correct answer is C

No explanation has been provided for this answer.

3,137.

The diagram above is a triangle XYZ whose area is 23.5cm2. XY =1Ocm and YZ = 8cm, calculate θ correct to the nearest degree.

A.

34o

B.

35o

C.

36o

D.

37o

E.

40o

Correct answer is C

Area = 1/2 x y x yz sinθ
23.5 = 1/2 x 10 x 8 sinθ

sinθ =
23.5 x 2/10 x 8
= 0.5875

θ = sin-1 0.5875 = 36o

3,138.

Find the radius of a circle in which an arc of length 44cm subtends angle 200° at the centre of the circle. [Take π = 22/7]

A.

3.9cm

B.

12.6cm

C.

25.2cm

D.

38.4cm

E.

124.5cm

Correct answer is B

44 = 200/360 x 2 x 22/7 x r

r = 360 x 7 x 44/200 x 2 x 22

= 12.6cm

3,139.

The cross-section of a prism is a right-angled triangle 3cm by 4cm by 5cm. The height of the prism is 8cm. Calculate its volume

A.

48cm3

B.

6Ocm3

C.

96cm3

D.

120cm3

E.

24Ocm3

Correct answer is A

Volume = base area x height
= 1/2 x 4 x 3 x 8
= 48cm3

3,140.

Calculate the total surface area of a solid cone of slant height 15cm and base radius 8cm in terms of π

A.

64πcm2

B.

12Oπcm2

C.

184πcm2

D.

200πcm2

E.

32Oπcm2

Correct answer is C

No explanation has been provided for this answer.