Mensuration - Jamb Mathematics Past Questions and Answers

Question 41:

• JAMB 1982

The area of the curved surface of the cone generated by the sector of a circle radius 6cm and are length 22cm is (\(\pi\) = \(\frac{22}{7}\))

A. 58 sq.cm
B. 34 sq.cm
C. 132 sq.cm
D. 77 sq.cm
E. 66 sq.cm

Question 42:

• JAMB 1982

The square base of a pyramid of side 3cm has height 8cm. If the pyramid is cut into two parts by a plane parallel to the base midway between the base and the vertex, the volumes of the two sections are

A. (21cm³, 3cm³)
B. (24cm³, 3cm³)
C. (24cm³, 21cm³)
D. (72cm³, 9cm³)
E. (63cm³, 9cm³)

Question 43:

• JAMB 1982

Two distinct sectors i the same circle substend 100^o and 30^o respectively at the centre of the circle. Their corresponding arcs are in ratio

A. 10:3
B. 1:100
C. 3:1
D. 5:2

Question 44:

• JAMB 1982

In the figure, QRST is a rectangle; PT// QM, angle P = 60^o. Find angle MUR

A. 150^o
B. 30^o
C. 60^o
D. 120^o
E. 90^o

Question 45:

• JAMB 1983

PQR is the diagram of a semicircle RSP with centre at Q and radius of length 3.5cm. If QPT = 60^o. Find the perimeter of the figure PTRS. \(\pi\) = \(\frac{22}{7}\)

A. 25cm
B. 18cm
C. 36cm
D. 29cm
E. 25.5cm