Question 103

Isika 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.

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Solution

Total distance around the track = Length of 2 parallel strips + Length of 2 semi-circles
$= 2 \times 52 + 2 \times π \times 16 [∵ r = 16 c m] = 104 + 2 \times \frac{22}{7} \times 16$
= 104 + 100.57
= 204.57 = 205 cm (approx)

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Question 103 Isika 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.

Total distance around the track = Length of 2 parallel strips + Length of 2 semi-circles =2×52+2×π×16[∵r=16cm]=104+2×227×16 = 104 + 100.57 = 204.57 = 205 cm (approx)

Question 103

Isika 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.

Total distance around the track = Length of 2 parallel strips + Length of 2 semi-circles
$= 2 \times 52 + 2 \times π \times 16 [∵ r = 16 c m] = 104 + 2 \times \frac{22}{7} \times 16$
= 104 + 100.57
= 204.57 = 205 cm (approx)