We are asked to find the area of the minor segment of a circle. The central angle of the segment is $60^{\circ}$ and the radius of the circle is 22 cm.
Next, let's find the area of the triangle. Since the central angle is 60∘ and the two sides are equal to the radius (22 cm), this is an isosceles triangle. Since the angles opposite to equal sides of an isosceles triangle are equal, the other two angles are equal to 2180∘−60∘=2120∘=60∘. Thus, this triangle is an equilateral triangle with side length 22 cm.
The area of an equilateral triangle with side length s is given by:
Areatriangle=43s2
In this case, s=22 cm.
Areatriangle=43(22)2=43(484)=1213 cm2.
Now, we can find the area of the minor segment by subtracting the area of the triangle from the area of the sector: