Jamb 1980 Mathematics Questions
Question 37:
A cylindrical motor of height 12cm has uniform thickness of 2cm. If the diameter of its outer cross section is 10cm, Find the volume of the constituent material. (take \(\pi\) = \(\frac{22}{7}\)
- A \(\frac{6600}{7}\)cm<sup style='font-size: smaller;'>3</sup>
- B 270cm<sup style='font-size: smaller;'>3</sup>
- C 660cm<sup style='font-size: smaller;'>3</sup>
- D \(\frac{4224}{7}\)cm<sup style='font-size: smaller;'>3</sup>
- E \(\frac{1980}{7}\)cm<sup style='font-size: smaller;'>3</sup>
Question 38:
If x varies inversely as y, and y varies directly as the square root of z, and z varies directly \(\frac{1}{w^2}\) write down in words how x varies with w
- A X varies inversely as w<sup style='font-size: smaller;'>2</sup>
- B X varies directly as w<sup style='font-size: smaller;'>2</sup>
- C X varies directly as w
- D X varies inversely as w
- E X varies directly as square root of w
Question 39:
Write the decimal number 39 to base 2
- A 10011 base 2
- B 110111 base 2
- C 111001 base 2
- D 100101 base 2
- E 19.5 base 2
Question 40:
If PN is perpendicular to QR, find the value of tan x.
- A \(\frac{5}{9}\)
- B \(\frac{3}{5}\)
- C \(\frac{3}{4}\)
- D \(\frac{4}{3}\)
- E \(\frac{5}{3}\)