Question

What is the perimetre for the shaded AREA

Answer 1

Answer: 94.9cm

Explanation:

Perimeter of inside arc

π x 2r = π x 30 = 94.248

94.248 x (113/360) = 94.248 x 0.3139... = 29.5834 ≈ 29.6cm

Perimeter of outer arc

π x 2r = π x 48 = 150.796

150.796 x (113/360) = 150.796 x 0.3139... = 47.3332 ≈ 47.3cm

Length of both LN and KM

24 - 15 = 9cm x 2 = 18cm

Total perimeter

29.6cm + 47.3cm + 18cm = 94.9cm