A chord, 7cm long, is drawn in a circle with radius 3.7cm...
A chord, 7cm long, is drawn in a circle with radius 3.7cm. Calculate the distance of the chord from the centre of the circle
0.7cm
1.2cm
2.0cm
2.5cm
Correct answer is B
let the chord be AB = 7cm
radius OA = 3.7cm distance of the = OM using Pythagoras theorem
OA2 = AM2 + OM2
3.72 = 3.52 + OM2
13.69 = 12.25 + OM2
13.69 - 12.25 = OM2
1.44 = OM2
OM = \(\sqrt{1.44}\)
OM = 1.2cm
distance of chord = 1.2cm
In the diagram, O is the centre of the circle. If < NLM = 74\(^o\), < LMN = 39\(^o\) and < ...
The angle between latitudes 30oS and 13oN is...
Simplify \(\frac{1}{5x + 5}\) + \(\frac{1}{7x+ 7}\)...
Determine the value of x in the figure ...
A solid hemisphere has a radius of 7 cm. Find the total surface area. ...
Solve for x and y if x - y = 2 and x2 - y2 = 8 ...