GEOMETRY AND TRIGONOMETRY - Jamb Mathematics Past Questions and Answers

Question 666:

• JAMB 2020

The equation of the line in the graph is

A. 3y = 3x + 12
B. 3y = 3x + 12
C. 3y = -4x + 12
D. 3y = -4x + 9

Question 667:

• JAMB 2020

A school boy lying on the ground 30m away from the foot of a water tank towel observes that the angle of elevation of the top of the tank is 60${}^o$. Calculate the height of the tank.

A. 60$\sqrt{3m}$
B. 30$\sqrt{3m}$
C. 20$\sqrt{3m}$
D. 10$\sqrt{3m}$

Question 668:

• JAMB 2020

The chord ST of a circle is equal to the radius r of the circle. Find the length of arc ST

A. $\frac{\pi r}{3}$
B. $\frac{\pi r}{2}$
C. $\frac{\pi r}{12}$
D. $\frac{\pi r}{6}$

Question 669:

• JAMB 2020

A sector of circle of radius 7.2cm which substends an angle of 300${}^o$ at the centre is used to form a cone. What s the radius of the base of the cone?

A. 8cm
B. 9cm
C. 6cm
D. 7cm

Question 670:

• JAMB 2020

A cylindrical tank has a capacity of 3080m${}^3$. What is the depth of the tank if the diameter of its base is 14m?

A. 25m
B. 23m
C. 22m
D. 20m