1. A chord is 22 cm long. It is 60 cm from the center of the circle.
1 answer:
Answer:
Radius, r = 61 cm
Step-by-step explanation:
According to the attached figure, we have,
Length of chord, AB = 22 cm
Such that, AP = PB = 11 cm
OP = 60 cm
It is required to find the radius of the circle. We know that radius of a circle is perpendicular to chord. So, APO forms a right angled triangle. Using Pythagoras theorem to find the radius of circle. Let it is r. So,
So, the radius of the circle is 61 cm.
You might be interested in
Given:
Consider the quadratic function is
With given vertex (5,8) and given point (1,3).
To find:
The equation of quadratic function.
Solution:
The quadratic function is
...(i)
Where, (h,k) is the vertex and a is a constant.
Vertex is (5,8). So,
Putting in (i), we get
...(ii)
The given point is (1,3). Putting x=1 and y=3 in (ii), we get
Putting in (ii), we get
Therefore, the required quadratic function is .