A sector of a circle of radius 7.2cm which subtends an an...
A sector of a circle of radius 7.2cm which subtends an angle of 300° at the centre is used to form a cone. What is the radius of the base of the cone?
8cm
6cm
9cm
7cm
Correct answer is B
(r/L) = (θ/360°)
Given θ = 300, and L = 7.2cm,
=> r = (300 x 7.2)/360
r = 6cm
Express 0.03785 in standard form correct to 3 significant figures. ...
Solve the equation (x - 2) (x - 3) = 12...
If \(\frac{x}{a+1}+\frac{y}{b}\) 1. Make y the subject of the relation...
Evaluate \(\frac{6.3 \times 10^5}{8.1 \times 10^3}\) to 3 significant fiqures...
On a map, 1cm represent 5km. Find the area on the map that represents 100km2....
Find the positive value of x if the standard deviation of the numbers 1, x + 1, 2x + 1 is 6 ...
Evaluate (2√3 - 4) (2√3 + 4) ...
In the diagram, ∠POQ = 150 and the radius of the circle PSQR is 4.2cm. [take π...
Find the mid point of S(-5, 4) and T(-3, -2) ...
What is the Value of 11101\(_{two}\)+ 10011\(_{two}\) - 10001\(_{two}\)?...