Q- In a circle of radius 10.5 cm, the minor arc is one-fifth of the major aro.
Find the area of the sector corresponding to the major arc.
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Radius of circle =10.5 cm
Let x cm be the major arc, then x/5 cm be the length of minor arc.
Circumference of circle = x + x/5 = 6x/5
We know, Circumference of circle = 2πr
= 2×22/7×10.5
6x/5 = 2×22/7×10.5
x = 55 cm
Area of major sector = 2πr / length of arc × πr²
= 1/2 × 55 × 10.5
= 288.75
The area of major sector is 288.75 cm²
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