Euclidean Geometry - Jamb Mathematics Past Questions and Answers

Question 76:

• JAMB 1983

PQRS is a desk of dimensions 2m x 0.8 which is inclined at 30^o to the horizontal. Find the inclination of the diagonal PR to the horizontal

A. 30^o 35'
B. 30^o 32'
C. 15^o 36'
D. 10^o
E. 10^o 42'

Question 77:

• JAMB 1983

If O is the centre of the circle in the figure, find the value of x

A. 50
B. 260
C. 100
D. 65
E. 130

Question 78:

• JAMB 1984

The sides of a triangle are(x + 4)cm, xcm and (x - 4)cm, respectively If the cosine of the largest angle is \(\frac{1}{5}\), find the value of x

A. 24cm
B. 20cm
C. 28cm
D. 7cm
E. \(\frac{88}{7}\)

Question 79:

• JAMB 1984

What is the volume of this regular three dimensional figure?

A. 160cm²
B. 48cm²
C. 120cm²
D. 40cm²

Question 80:

• JAMB 1984

In the figure, O is the centre of circle PQRS and PS//RT. If PRT = 135, then PSO is

A. 67\(\frac{1}{2}\)^o
B. 22\(\frac{1}{2}\)^o
C. 33\(\frac{1}{2}\)^o
D. 45^o
E. 90^o