The figure given below represents a sector of a circle of radius r cm making an angle theta - Maths - Areas Related to Circles

Question

The figure given below represents a sector of a circle of radius r
cm making an angle theta The area of the sector is A cm2 and the
perimeter of the sector is 60 cm Prove that (i)
theta=360degrees/pi*(30/r-1) (ii) A=30r-rsquare

Rishabh Mittal · Accepted Answer

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The figure given below represents a sector of a circle of radius r cm making an angle theta . The area of the sector is A cm2 and the perimeter of the sector is 60 cm. Prove that (i) theta=360degrees/pi*(30/r-1) (ii) A=30r-rsquare