Euclidean Geometry - Jamb Mathematics Past Questions and Answers

Question 61:

• JAMB 1981

What is the length of an arc of a circle that substends 2\(\frac{1}{2}\) radians at the centre when the raduis of the circle = \(\frac{k}{k + 1}\) + \(\frac{k + 1}{k}\) then

A. P < 0
B. P\(\geq\) 0
C. P \(\leq\) 0
D. P < 1
E. P > 0

Question 62:

• JAMB 1981

In the figure, find the area of XYZW

A. 60cm²
B. 54cm²
C. 27cm²
D. 54\(\sqrt{2}\)cm²
E. 27\(\sqrt{2}\)cm²

Question 63:

• JAMB 1981

In the diagram, XZ is the diameter of a circle's radius \(\frac{5}{2}\). If XY is 4cm, then the area of the triangle XYZ is

A. 12cm²
B. 28\(\frac{1}{2}\)cm²
C. 16cm²
D. 10cm²
E. 6cm²

Question 64:

• JAMB 1982

In a regular polygon of n sides, each interior angle is 144o. Find n

A. 12
B. 11
C. 10
D. 8
E. 6F

Question 65:

• JAMB 1982

A side of a rhombus is 2cm in length. An angle of the rhombus is 60^o. What is the length of the diagonal facing this angle?

A. 2cm
B. 8cm
C. 4cm
D. 2\(\sqrt{3}\)cm
E. 16cm