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प्रश्न
Ishika has designed a small oval race track for her remote control car. Her design is shown in the given figure. What is the total distance around the track? Round your answer to the nearest whole centimetre.
उत्तर
Total distance around the track = Length of 2 parallel strips + Length of 2 semi-circles
= 2 × 52 + 2 × π × 16 ......[∵ r = 16 cm]
= 104 + 2 × 3.14 × 16
= 104 + 100.5009
= 205 cm (approx)
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