1.

Find the radius of sector whose perimeter and length of arc are 30 cm and 16 cm respectively.

Answer»

Given length of the arc = 16 cm

Perimeter of the arc = 30 cm

l + 2r = 30

16 + 2 r = 30

2 r = 30 – 16

2 r = 14

r = 14/2

r = 7 cm

Radius of the sector = 7 cm



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