Perimeter of given figure is equal to :
Perimeter of square - side length + quarter Circumference of the circle
that is :
So, the required perimeter is 37.85 units
Using the the density(D)-mass(m)-volume(V) formula
, we can calculate the volume
8.75*40=350
time and a half=13.125
7.5 hours * 13.25= 98.4375
total 448.4375
If any line drawn from center of the circle (OC in the diagram) bisect the chord of circle (AB in the diagram), then it is said to be perpendicular to chord AB.
So OC is perpendicular to CB, and we can say that triangle OCB is the Right Triangle.
In the Right Triangle OCB,
angle BCO = 90°
angle COB = 90° - angle CBO = 90° - 40° = 50°
So, option A is the final answer, 90° and 50°.
