Ishika has designed a small oval race track for her remote control car. Her design is shown in the figure 9.55. What is the total distance around the track? Round your answer to the nearest whole cm.

Solution:

We know that

Total distance around the track = Length of two parallel strips + Length of two semi circles

Given

Radius r = 16 cm

Substituting the values

= (2 × 52) + (2 × π × 16)

By further calculation

= 104 + (2 × 3.14 × 16)

So we get

= 104 + 100.5009

= 205 cm

Therefore, the total distance around the track is 205 cm.

✦ Try This: The perimeter of a rhombus is 20 cm and one diagonal is 2 cm long then the length of the other diagonal is

☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 11

NCERT Exemplar Class 7 Maths Chapter 9 Problem 103

Ishika has designed a small oval race track for her remote control car. Her design is shown in the figure 9.55. What is the total distance around the track? Round your answer to the nearest whole cm.

Summary:

Ishika has designed a small oval race track for her remote control car. Her design is shown in the figure 9.55. The total distance around the track is 205 cm

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