A running track is shaped like a stadium with two straight sides and two curved ends. Each straight side is 80 m long. Each curved end is a semicircle with a diameter of 70 m. Find the total length around the track. (Take π = 22/7.)
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Worked Solution
Step 1: The two semicircles at the ends together form one complete circle of diameter 70 m.
Step 2: Find the total curved length.
Curved length = π × d = (22/7) × 70 = 220 m.
Step 3: Find the total straight length.
Straight length = 80 + 80 = 160 m.
Step 4: Add to find the total perimeter.
Total = 220 + 160 = 380 m.
Answer: 380 m
Correct answer: 380 m
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