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
In the diagram, O is the centre, ¯RT is a diameter, < PQT = 33o and <TOS = 76\(^...
If cosθ = ab, find 1 + tan2θ...
Which of the following quadratic equations has −12 and 34 as its roots?...
Find the standard deviation of 2, 3, 5 and 6 ...
What must be added to (2x - 3y) to get (x - 2y)? ...
Find the volume of a cone of radius 3.5cm and vertical height 12cm [Take π = 22/7] ...