Answer:
293 m
Step-by-step explanation:
Split the figure into 3 parts :
- Left semicircle
- Center rectangle
- Right semicircle
Perimeter of the left semicircle
- P₁ = πr
- P₁ = 3.1 x 15 [half the diameter]
- P₁ = 46.5 m
Perimeter of the right semicircle
- It is the same perimeter of the left semicircle as the diameter is equal
- P₂ = 46.5 m
Perimeter of the rectangle
- Here we only need to consider the sum of the lengths of the rectangle
- P₃ = 2 x 100
- P₃ = 200
Distance around the race track
- P₁ + P₂ + P₃
- 46.5 + 46.5 + 200
- 293 m
