A tunnel cross section is formed by a rectangle 5m wide and 8m high with a rounded section at the top formed as a segment above the isosceles triangle ABC - as shown. Point C is at the midpoint of the tunnel base. C 5 (a) Find the length of the sector radius AC. (b) Find the angle 8. B

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Chapter1: Functions And Models
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A tunnel cross section is formed by a rectangle 5m wide and 8m high with a
rounded section at the top formed as a segment above the isosceles triangle
ABC as shown. Point C is at the midpoint of the tunnel base.
0
5
(a) Find the length of the sector radius AC.
(b) Find the angle 8.
B
8
Transcribed Image Text:A tunnel cross section is formed by a rectangle 5m wide and 8m high with a rounded section at the top formed as a segment above the isosceles triangle ABC as shown. Point C is at the midpoint of the tunnel base. 0 5 (a) Find the length of the sector radius AC. (b) Find the angle 8. B 8
(c) Find the total tunnel cross sectional area.
(d) Find the length of the perimeter of the tunnel cross section.
Transcribed Image Text:(c) Find the total tunnel cross sectional area. (d) Find the length of the perimeter of the tunnel cross section.
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