Question

7)
What is the length of arc of a sector,
whose perimeter is 64.8cm and radius is
12.4 cm?
40 cm
45 cm
40.8 cm
42 cm
Drov
Noyt​

Answer 1

Answer:

perimeter = length of arc + 2×( radius)

=> 64.8 = length of arc + (2× 12.4) cm

=> length of arc = 64.8 - 24.8 cm

=> length of arc = 40 cm

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