A circular park has radius 42 m. Tanvi walks around it once at 4 km/h. Approximately how many minutes does she take for one round? (Take π = 22/7, and 1 km = 1000 m)

Question

Accepted Answer

About 4 minutes. C = 2*22/7*42 = 264 m = 0.264 km. Time = 0.264/4 h = 0.066 h = 0.066*60 = 3.96 min, about 4 minutes.

A circular park has radius 42 m.
Tanvi walks around it once at 4 km/h.
Approximately how many minutes does she take for one round? (Take π = $\frac{22}{7}$ , and 1 km = 1000 m)

Step-by-Step Solution

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More Class 7 Circumference of a Circle practice

A circular park has radius 42 m.Tanvi walks around it once at 4 km/h.Approximately how many minutes does she take for one round? (Take π = 722​, and 1 km = 1000 m)

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 7 Circumference of a Circle practice

A circular park has radius 42 m.
Tanvi walks around it once at 4 km/h.
Approximately how many minutes does she take for one round? (Take π = $\frac{22}{7}$ , and 1 km = 1000 m)