(8) An arc PQ subtends an angle of 120° at the centre of a circle of radius 1 cm. The length of
arc PQ is A. 120 cm B. 60 cm C. π/6cm D. 2π/3cm E.π^2/18 cm
(9) If y varies inversely as the cube of (x+1) and k is the constant of proportionality, then
A. y = kx3 + 1 B. y=k(x+1)3 C. y= k/(x^3+1) D. y= k/(x+1)^3 E. y=1/(x+1)^3 +k
P.T. O
x 1 2 3 4 6 10
y 6 3 2 1.5 1 0.6
(10)
The table shows the variation of y with respects to x . The constant of variation k is
A. 0.06 B. 1/6 C. 2/3 D. 3/2 E. 6
- Find the marked length in the figure. (3 marks )